Ideas Library - Deepstash

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Ideas from books, articles & podcasts.


Venn Diagram

continuum hypothesis is failed, because of these reasons:

if we can do multiple calc on different areas of infinity and that looks like we are doing things differently, or we're dealing with different infinity, but actually we're doing at the same area, the same numbes were used interchange...

Baghdad Battery: A Rudimentary Taser (for Pain Relief)

Archaeologists use the term “Baghdad battery” to refer to a ceramic pot, copper tube, and iron rod that were found in Iraq near what was once the capital of both the Parthian and subsequent Sasanian Empire. They believe the three distinct objects once fitted together to create a single device. Th...

Roman Concrete: Cement that Does Not Crack

Many architectural projects of ancient Rome would not have been possible without Roman concrete. Also known as opus caementicium, Roman concrete was a hydraulic-setting cement mix consisting of volcanic ash and lime that bound rock fragments into “a single stone mass” and made them impre...

The Houfeng Didong Yi: The World’s First Seismoscope

Created almost 2000 years ago, the Houfeng Didong Yi holds the honor of being the world’s first seismoscope. Its place of origin was China, a country that has been plagued by earthquakes for as long as its inhabitants can remember. Its creator was Zhang Heng, a distinguished astronomer, cartograp...

Damascus Steel: Swords that Will Not Dull

Damascus steel swords originated in the Middle East during the 9th century and were renowned for their appearance as well as their durability, being multiple times stronger and sharper than the Western swords used during the Crusades.

Their name, derived from the Arabic word for “water,” r...

Antikythera Mechanism: A Cosmic Clock Before Copernicus

The Antikythera mechanism, which was found to be over 2,200 years old, had functioned as an ancient computer.  

CT scans reveal the contraptions mind boggling complexity, combining cycles from Babylonian astronomy, mathematics from Plato’s Academy, and ancient Greek astronomical theories. I...

Greek Fire: Flames that Don’t Go Out

When the Muslim fleet of the Umayyad Caliphate attempted to lay siege to the Byzantine city of Constantinople in 674, their ships were doused in flames. At first, the Muslims were not alarmed; fire was often used in naval warfare and could be put out easily with cloth, dirt, or water. This, howev...

Ahead Of Their Time

Archaeological excavations throughout the world reveal that, once in a while, ancient civilizations developed inventions that were decades if not centuries ahead of their time.

It is sometimes said that these inventions rival or outmatch modern science. This, too, is a misconception. While ...

Back To The Future

Archaeologists repeatedly stumble upon artifacts that seem way too advanced for the times from which they originate. The ancient Greeks, for instance, developed a clock capable of calculating and tracking planetary motions and solar eclipses among other things. These forward-thinking inventions a...

Across our society today, norms of noisiness run deep. Demands like constant connectivity and maintaining a competitive advantage still prevail in most office cultures. Few organizations prize or prioritize pristine human attention. But there are simple strategies we can employ in order to find o...

Give Others Quiet Time To Think

While you can’t set the overall group norms and culture unilaterally on the basis of what you think is right, you can be on the lookout for new ideas to propose or new possibilities for managing the soundscape or enhancing the ambiance, especially ones that serve the interests of those who lack i...

A Noise Creator

Maybe you unwittingly leave ringers and notifications on full blast. Maybe you “think out loud” or habitually interrupt others. Perhaps you impulsively post on social media or send excessive texts or emails that require responses. Maybe you play music or podcasts in common spaces without checking...

Talk About The Noise

If we want organizational cultures that honor quiet, there are a few general principles we need to apply to make the transformation. The first is that we have to deliberately talk about it; we need to have clear conversations about our expectations around constant connectivity, when it’s permissi...

What Is Noisy To Us

The meaning of noise can sometimes be subjective. One person’s symphony is another person’s annoyance. We define “noise” as all the unwanted sound and mental stimulation that interferes with our capacity to make sense of the world and our ability to act upon our intentions. In this sense, noise i...

A World of Noise

There’s empirical evidence that life is noisier than ever before — there are louder and more ubiquitous TVs, speakers, and electronic device notifications in publ...

Get Quiet For A While

Across our society today, norms of noisiness run deep. Demands like constant connectivity and maintaining a competitive advantage still prevail in most office cultures. Few organizations prize or prioritize pristine human attention. But there are simple strategies we can employ in order to find o...

Thinking the grass is greener on the other side

It's important to remember that we live by making a series of trade-offs. We're always missing out on something. Choosing one activity or path inevitably means you'll miss out on others.

FOMO makes you miss out on today because you're so worried about what else is out there. You can win the...

Knowing what triggers your FOMO will help you get out of situations before they set off that alarm.

The biggest FOMO trigger is often social media. Your trigger might be seeing yet another friend buy their first home. You can expose yourself to less of the stuff that makes you feel like you...

Experiencing a bodily reaction to FOMO

Not feeling part of an event or the in-group could be enough for someone to experience a fight-or-flight response.

Next time you feel a stress response to FOMO, take a moment to assess what "danger" you're really in. Then, you can talk yourself down from that fight-or-flight response.

We are constantly comparing ourselves to people around us. While it can serve us by helping us grow, it can sometimes lead to hard feelings. FOMO is about having thoughts about missing out on opportunities which might increase our happiness.

One explanation for why we experience FOMO is tha...

FOMO - the fear of missing out

Worrying about missing out on new experiences, content, trends, and even investments can make us feel like we are falling behind.

We can overcome this feeling and be content with what we have by embracing the present moment.

Start today

The best time to plant a tree is 20 years ago. The next best time is today.

Building a business that earns a great income, or creating a career you enjoy, takes time. If you want to earn more, don't wait for the perfect moment. Start today. It's about taking that first step.

It is easy to focus too much time and energy on the wrong things. There are only so many hours in a day. We can't say yes to every opportunity. Instead, ask yourself, "which opportunity can give me the biggest possible return?"

Everything requires energy, ...

What being the best really means

Seth Godin defines the best in the world as:

  • the best for the target consumers, right now, based on what they believe and know.
  • in the world, as in their world, the world they have access to.

Aim for being the best

It's obvious that the top performers in any industry always earn the most. How to become a top performer is not that clear.

Seth Godin says in his book, The Dip, that the reason most people fail is that when people are in the dip and things get very difficult, they often quit. The p...

Making better choices today

We can make smart choices now that will set ourselves up well for later. Choices that will improve your life.

It means you will have to do hard things today. If you're willing to look farther, you will make better choices today.

How to promote intentional learning in others

  • Develop the antecedents of intentional learning, such as helping people recognize the need for learning.
  • Help learners identify their learning goals.
  • Help learners plan their learning. For example, figuring out where and when...

  • Encourage the main antecedents of intentional learning, including motivation, belief in your learning ability, and recognising your need to learn.
  • Identify your goals, such as figuring out what concepts you’re trying to learn.
  • Plan yo...

  • It can be more effective, such as learning an advanced mathematical concept for an exam.
  • It can be more efficient.
  • It can be more enjoyable.

In other situations, intentional learning is ...

  • Incidental learning occurs during activities where learning is not a goal for the learner. For example, when someone plays a sport just for fun, but ends up improving their skills over time.
  • Intentional learning involves learning as a deliberate and ...

Characteristics of intentional learning

Intentional learning involves learning that's active and autonomous. Characteristics include:

  • Motivation to learn
  • Specific learning goals
  • Attempts to improve the learning process
  • Analytical engagement

Intentional learning

Intentional learning occurs when it is the primary goal of a learner.

For example, someone who wants to learn a new language reads a book in a language and looks up new words that they encounter to improve their vocabulary.

This is contrasted with incidental learning, whe...

Fixating on eight hours can make it harder to achieve

  • For many, bedtime might be our first opportunity of the day to be alone with our thoughts. It’s connected to waking in the night because we haven’t had any processing time during the day.
  • Managing stress and anxiety during waking hours and learning how to relax body and mind are key ...

Waking as much as five or seven times a night is not necessarily a cause for concern. It's more important how you feel 30 minutes after waking in the morning.

Lifestyle changes can make a big difference:

  • Stop caffeine consumption by 2 pm or 3 pm
  • Reduce wa...

Don’t Call It “Fake News”

The education system emphasizes the breakdown of misinformation, disinformation, and "malinformation".

Misinformation includes errors that may be unintentional. Disinformation encompasses outright lies. And malinformation is what know as “gossip.” Malinformation may be accurate or inaccurat...

Nobody sleeps the night through

It's quite normal to wake up during the night. Waking up during the night does not necessarily mean you have insomnia. People will often return to sleep without realising that they have ever been awake.

Reasons for night-time waking include being too hot or cold, needing the loo, having a n...

Early Media Literacy Education Works

Finland is overwhelmingly the top country in the European Media Literacy Index. The report described Finland and other high-scoring countries as  best equipped to withstand the impact of fake news due to the q...

Making Them Aware At An Early Age

The Finnish educational model  teaches young students to push back against “fake news” as early as primary school. The Finnish government began this pedagogical push in 2014 when Russian disinformation became increasingly widespread in Finland.

Such a program is increasingly necessary as Fi...

Finland: A Model for Media Literacy Training

  • Finland has a country-wide media literacy program at all levels of education.
  • Research suggests that misinformation-related education works; Finland is the top European country for media-related critical thinking.
  • Research in Uganda suggests that such training can work even i...

Complain Nicely But Effectively

  • Don't fly into a rage or be demanding.
  • Remember everyone is human and the professionals offering you services are trying, even if they happen to fall short
  • Take your complaint up with the person responsible, whether it's a cosmetic practitioner, chef, or other involved profes...