If the context has changed
E.g.,
"Ny is a great city."
Alice removes "great".
Bob wonts to replace it with "gorgeous", by removing "reat" and adding "orgeous".
Having merged:
"Ny is a orgeous city."
Begs for semantic intent preservation, such as "reword great to gorgeous".
The black agent mints a black coin, increasing its balance from 3 to 4 coins
Why to capture 4? Ops like burn(10), mint(1) do the same, yet being more semantic, as they convey what happens, rather than the result.
E.g., when green has 3 green_coins, and we see send(1, green_coin, (to) black), send(3, green_coins, (to) green) did green just miscalculated his balance (should be 2), or did he sent and minted one at the same time?