[kenkam]

| so you'd think they would know almost instantly what they're looking for.

What they are looking for is probably a subset of good startups, ie. your startup can be good but it's not what they are looking for.

To some extent it must be a statistics game for them. The investment they make flying founders out must have a good return for them in terms of potential investments. Since they have been doing it for a while now the numbers must be close to optimal.