I have procrastinated on a really important piece of work, and it got me thinking, why have human beings evolved this behaviour?
I'm even procrastinating further by starting this discussion. Surely it must have some evolutionary benefit?
To be able to work under pressure
that's the million dollar question
I think TSR is more to blame than evoloution :P
That's not how evolution works.
We humans have a reward system, where some endorphins are released when you do something pleasurable. You'll see with children sometimes they do not grasp the concept of waiting for a reward, such as an experiment where children would always chose to eat the candy in front of them, even though waiting would gain them two candies. They want immediate gratification as they do not yet grasp the concept of waiting.
Procrastination is like this, where you want immediate pleasure such as watching a cat video or something instead of doing homework as it is better than doing boring work, even though meeting deadlines would destress you a lot. It's basically the manipulation of this reward system.
There's an interesting TED talk that goes into detail about this:
Also I should stop procrastinating talking about procrastinating and do my homework. >.<