I have to write a 6000 word essay for something called 'The extended project', which is equivalent to an AS but I'm struggling for topic ideas.

It can be on anything. Anything. Ideally I want to do it on something related to Computer Science and it needs to be something that is open to discussion.

I thought about doing it on the increasing importance of GPUs but I think I might struggle to get 6000 words out of that.

So has anyone got any ideas on at least a vague topic I can write about?

Any suggestions will be greatly appreciated.