>A single person who is taking advantage of the benefits (slacking off) will quickly bring down productivity of the whole team People are already doing this on

>A single person who is taking advantage of the benefits (slacking off) will quickly bring down productivity of the whole team People are already doing this on-site. Whatever metrics you're using to prevent this kind of behavior should be largely independent from sync/async. There are also individual reasons why one would slack either sync or async. You give an async example. Plenty of school kids know the example of the projects where half the group doesn't do anything, even when they are together.