Serge Koval @sergekoval: If you wanted to build a useful tool for traders or investors what would it be?
The most useful tool for traders:
A helmet they put on their head that gives them a massive electric shock everytime they consider putting on a trade.
This is not to say trading is all bad.
But it forces you to be REALLY SURE before you put on a trade. Maybe you will only do one or two trades a year then. That’s enough to make all of your money. And trading includes both the entry and the exit.