Heard a funny story about Terafab.
Apparently, Elon went to an equipment supplier and confidently declared that he didn’t need process control (basically, inline metrology). He figured they could just catch the defects during wafer testing at the end.
Then he came back later saying, “Okay, I was wrong. Can you sell me those tools?” 🤣
Honestly, that should have been obvious. TSMC and Samsung aren’t stupid. There’s a reason they use all that equipment. It comes down to economics…
Still, I like that he’s willing to learn as he goes. 👍