Raise $500 for a thing you care about because you actually get the experience of taking an idea and actually doing it. There are fewer and fewer excuses not to.

Obviously solving the education problem is big and complex, and there's already so many failings, but coding is the new fluency. This is the most valuable skill of this century. If you want to be a founder of a company, and not even just a tech company, but like a founder of a company, because I'm telling you software is going to play a role.

Having ideas and doing them - that's what entrepreneurship comes down to. That's something that makes you not just a great founder who I want to invest in, but also a great employee or someone I want to work with.

I guess if you include contractors that are six or seven people working on reddit, but when we got acquired there were basically three and then in the years since, we've added three more developer hires full time, and a community manger. But the site is still remarkably small.

You can throw - and we've seen plenty of these kinds of companies - millions of dollars in advertising for a website or a service, and in the end if it's not useful no one's going to use it.

We don't even realize something is broken until someone else shows us a better way

Hundreds of these companies I've seen since the beginning stages - including Dropbox and Airbnb - one of them has actually been crushed by an incumbent. The Googles, the Twitters, the Facebooks, they might be someone to acquire you, which is not necessarily a bad position to be in.