4 spaces vs tab: the controversy continues

For all we know, blood has shed and countless of paid working hours has been put to an use on this topic. What is more important: 2 spaces versus 4 spaces might be an even bigger controversy.

A survey under patronage of the OOPSLA 2013 has reached a consensus demonstrating that 2 spaces is obviously a heresy. And 4-spacers are just trying to hide the fact that their keyboard has no tab key.