Stumbled on a stat about drafting accuracy that blew my mind

I was reading through some old trade journals last week and found out that hand drafting errors were about 1 in 1000 lines back in the 80s, but CAD software still has about a 1 in 500 mistake rate for complex projects. That surprised me because I always figured digital would be way more precise than pencil and paper. Has anyone else run into numbers on error rates that changed how they work?

2 comments

2 Comments

wilson.sam6d agoMost Upvoted

My drafting errors are more like 1 in 10, so at least I'm consistent.

tara_jones946d ago

Actually I think those numbers might be comparing two different things. Hand drafting errors were usually caught by checkers before prints got made, while CAD errors often slip through because people trust the software too much.