Introduction to Cryptoeconomics - Vitalik Buterin 
https://www.youtube.com/watch?v=pKqdjaH1dRo&feature=youtu.be
https://www.youtube.com/watch?v=pKqdjaH1dRo&feature=youtu.be
what is about pinalty
you can explain for me it affect ethereum user, about pinalty system, can reduce balance or what is affect about pinalty
Etherium is centralized and your balance can be forked and seized