Using Time Blocks to manage productivity

http://blog.fogcreek.com/using-timeblocks-to-increase-maker-efficiency-tech-talk/

The way TimeBlock works is this: we divide a week into 10 blocks. […]
When we get a project, we divide it into TimeBlocks. […]
a task can’t be longer than two TimeBlocks, so if you have a task that takes a week, you have to write 10 different, or five different time blocks for it. […]
We frame it like if I had to do the same task this week, what would I do differently, because we have to learn from our mistakes.

(Autor hat eine Firma draus gemacht: http://timeblock.com/blog/)