Fardle

I saw your TED talk live, it was amazing. Standing ovation was wholly deserved.

Thank you for making something out of this whole terrible tragedy.

Historically, how did bearing used to be manufactured? By eye? A shot tower? I assume they need to be made to pretty high tolerances to work at all.

Also, a slightly more relevant question- is there a push for new tech from the oil industry? They must be operating at the limits all the time.

Thanks!