[tim58]

In large teams it's worth the reduction in 'code velocity' to have engineers document what they are building.

I specifically make efforts, and encourage others to do the same, to keep most documentation outside of slack. Do you have a question about a ticket? Ask it in a comment not slack. Do you have a question about how our system works? Ask it in the private Stack Overflow. Want to advertise a cool new internal service we can use? Great tell everyone in slack, but also add it to swaggerhub.