Probably so you can run a big complicated formula in the REPL and easily prepend `wat /` to it to inspect what's going on. Same reason jupyter notebooks allow

Probably so you can run a big complicated formula in the REPL and easily prepend `wat /` to it to inspect what's going on. Same reason jupyter notebooks allow you to prepend '?' or '??' to inspect a variable (though not expressions, in that respect this syntax is better)