Anecdote from yesterday: Here is a JIRA ticket, with a linked Confluence spec. Implement it. 1h and ~$25 later I finally had my product, needed to now babysit for another 30 mins to fix the gaps. For that 1h I worked on a different project. But - I could’ve just told a Jr to do the same work. They’d been done in 1h30m too, probably without me needing to instruct on how to fix gaps. So, it’s not even 10x faster vs a Jr in simple “monkey see monkey do” cases.