Algorithms take more decisions then ever before, in this emerging information age.
Algorithms are a set of rules which when processed come to or assist in making a decision.
Brilliant humans write these algorithms and program them into computers. Powerful computers run these algorithms in a flash. Decisions are made in a flash.
We have witnessed a tumult in the stock markets in recent days. A story about how many decisions during this tumult were taken by computers and how many were taken by humans would make interesting reading.
PS. also see the following blog posts
Digital domino effect: the present day stock markets
Window to the world: digital access as an enabler
Digital calm: settling of the stock market