and I was quite surprised at how often copy-paste-modify operations resulted in subtle bugs that weren’t immediately obvious. I noticed this quite some time ag

and I was quite surprised at how often copy-paste-modify operations resulted in subtle bugs that weren’t immediately obvious. I noticed this quite some time ago. This is also a major source of bugs that I write. That is, until I decided to stop copy-pasting more than a word at all, and retype everything character by character when I need it again. Interestingly enough, this saves a lot of time because the bugs I would generate otherwise cost way more time than a bit of typing.