I was commenting based on my experience that 1) VC firms actually do ask you for permission to run background checks on you, look you up online, and know a fair bit about you 2) We run background checks on everyone we hire, and its fairly easy to do, because I believe it would be irresponsible not to.

I don't think there is one real error here as you put it, but it's been made public he was warned about him before and people he worked with would refuse to go to his properties when invited and told him why (citation: https://medium.com/@EthanZ/on-me-and-the-media-lab-715bfc707...).

"Due diligence research" makes it sound complicated. Just Google the guy. I always look up potential business partners. And, in the past, I have discovered evidence of criminal activity that puts me on alert (nothing like Epstein though, just run-of-the-mill fraud.)

The real error is acting like the most likely explanation is he just failed to do some utterly basic due diligence.