A related advantage of mission oriented ideas, is that you yourself will be dedicated to them.

There's at least a hundred times more people with great ideas than people that are willing to put in the effort to execute them well.

In general, it's best if you're building something that you yourself need.

You can basically change everything in a startup but the market.

Someday, you need to build a business that's difficult to replicate. This is an important part of a good idea.

... for the top twenty most valuable YC companies, all of them have at least two founders.

If you want something in a deal, just ask for it.