Unlike previous YC startups, most of these seem pretty trivial, and do not really solve any problems. Perceived problems (e.g. PlanGrid): Do they actually know

Unlike previous YC startups, most of these seem pretty trivial, and do not really solve any problems. Perceived problems (e.g. PlanGrid): Do they actually know someone who works in constructions and has said "If only I could view plans on a computer instead of paper!". Paper is cheap, easy to use, sturdy and mobile with infinite battery life, and I'd guess works fine for most folks in construction. More trouble than it's worth (e.g. Pair): Keep in touch with my SO? There's these things called phone calls, text messages, emails, skype... If I want to connect more with my SO, the last thing I want to do is spend time on yet another social network. Bad economics (icracked): It's not hard to find somebody who does iphone screen repairs. The real problem is that the repairs are quite hard and therefor expensive, and I don't see how adding a middleman would make it cheaper. What's missing is the obvious gain in efficiency that came with previous YC startups like Airbnb or Octopart. Or maybe with the increased number of YC startups, PG is just throwing more ideas on the wall to see what will stick, or what the initial concept will turn into? That being said, I wish all those guys good luck and success, and after all they are out there doing it, while all I'm doing is writing snarky comments.