Testing out the new Claude Cowork. I asked it to go through every Lenny's Podcast episode and pull out the 10 most important themes and lessons for product builders. Then, the 10 most counterintuitive truths. I gave it access to a folder with 320 transcripts. First, it said "This is a substantial task - 320 podcast transcripts to analyze!" 15 minutes later... The 10 most Important themes from Lenny's Podcast 1. Activation Is Everything — Slack's "2,000 messages" moment, Gamma's 30-second…