Rob Pike definitely wrote large chunks of Unix while at Bell Labs. It's wrong to say he wrote all of it like the GP did but it is also wrong to diminish his contributions.

Unless you meant to imply that UNIX isn't cool.

I did not say he wrote all of it. “Write” can include co-authorship.

A lot of people are learning some history today, beautiful to see.

I think that if you meant co-authorship you could have made that clearer. A 'contributed to' would have saved some unique ids.