A chain of trust

Each blockchain block contains:

1. Data: depends on the type of chain. Bitcoin stores the sender, receiver, and amount.
2. Hash: a fingerprint that identifies the block. If the content changes the hash will not match and the interference will be dete...

Derek Parkfit describes personal identity as a chain of successive selves, all linked, but each different from the previous or subsequent self. Our approach to our future self is like our attitude to other people: we see our future selves as strangers.

This interferes with our abilit...

The challenge with consistency is that it’s quite difficult to sustain. One strategy incredibly useful is Seinfeld’s “Don’t Break The Chain,” whereby on the very days you show up to work toward your goal, you mark an X on your calendar. Your objective then becomes very simple: Do...