A client’s team spent a full week adding a CSV export to their admin panel. Two engineers, clear requirements, maybe a day of actual work. The rest of the time went to understanding existing code well enough to change it safely. That’s what I call codebase drag: when the codebase makes every task take longer than it should. It doesn’t show up in any dashboard or sprint report.
Spreading knowledge and context sharing are exactly why I like code reviews. It should also be something done by more than one person so that information is better disseminated throughout the team.
Code presentations are great for that.
One or two people present their code before the merge. Others watch, ask questions, etc. Small changes and improvements can be done immediately. Ideally the change is merged after the presentation. It can speed up things immensely and more people feel ownership. If a simple ticket stays in review for a week, it can be very detrimental.