Apart from simple mechanical objects that define what tools are, like a hammer or a bucket, tools can also have broader meanings like:

• A book is a tool to preserve our ideas and memory.
• A painting can be a tool to preserve the beauty of what we see or imagine.
• Relig...

We are already aware of many of these tools. And yet our practical minds require evidence before committing to them. The improving of attention through mental training  or meditation practice  works. Likewise, the strategies offered by cognitive behavioural therapy  are among the...

Confirmation bias is a common tendency to self-promote and validate our own beliefs. Most controversial issues have people who are for or against the given topic, and tend to look at points that support their existing belief patterns.

Daniel Kahneman, a Nobel prize winning...