This is how great intellectual breakthroughs usually happen in practice. It is rarely the isolated genius having a eureka moment alone in the lab. Nor is it merely a question of building on precedent, of standing on the shoulders of giants, in Newton's famous phrase. Great breakthroughs are closer to what happens in a flood plain: a dozen separate tributaries converge, and the rising waters lift the genius high enough that he or she can see around the conceptual obstructions of the age.

Who is giving the orders to ants? No one. They are self-organizing. Each of our immune systems get smarter over the years as its biochemical parts share information, and it responds with individualized defenses, but it isn't conscious and it has no memory. The host of that party didn't decree that everyone would gather in the kitchen, but it happened anyway. Emergence means we sometimes act in concert for better or worse.

When it's a sharing and improvisational meeting, where you're riffing off other people's ideas, that actually can be productive.

Silicon-based life may be impossible for one other reason: silicon bonds readily dissolve in water.

Chance favors the connected mind.

Calculus, the electrical battery, the telephone, the steam engine, the radio - all these groundbreaking innovations were hit upon by multiple inventors working in parallel with no knowledge of one another.

Popular culture, on average, has been growing more cognitively challenging over the past thirty years, not less. Despite everything you hear about declining standards and dumbing-down, you have to do more intellectual work to make sense of today's television or games - much less the internet - than you did a few decades ago.