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Hollis Robbins: Most people focus on the vast reserves of content now available online, but few people ask: “Is this a good teacher?”

Huge groups defeat the purpose of community learning. You lose the sense of a group if it is too large. Based on our experiments, a cohort of around 30 students is a good size to provide enough variety in the group but still makes it feel intimate.

We’ve spent the last few decades getting to the point that we can now give everyone on earth a cheap, reliable, easy-to-use pocket computer with access to a global information network. But so far, though over 4bn people have one of these things, we’ve only just scratched the surface of what we can do with them. There’s an old saying that the first ... See more

Instead of enticing students to abandon the university system, why not build programs on top of it? I can imagine companies innovating with programs that fill nights, weekends or breaks in students academic lives.

Gorillas is betting that customers care about speed above all else and building a business model to enable this.

Greg, PictureThis, LettuceGrow — plants / gardening hobby

The last decade saw a boom in the health and wellness market, and we’re beginning to see that consumer demand trickle into the attention economy.

This may not seem like a big deal, but what happens is that each investment you do isn't just a one-click expenditure of $X today. It's $Y in ongoing maintenance cost to keep up with a stream of irregular documents. It's not uncommon for angels to accumulate dozens if not hundreds of investments over the years. At a certain point the maintenance bu... See more