Second, we should not name snapshots with simple numbers.
Instead, use contents of “message” file and the SHA1 algorithm to produce a hash.
Do you know SHA1? (Maybe talk about SHA1)
This hash will be unique to the snapshot since no two messages will ever have the same date, message, parent, and author.
You both update your histories with the new technique and instead of clashing “snapshot-114” folders, you now have distinct folders named “8ba3441...” and “db9ecb5...”.