Maybe if browsers start shipping or downloading WASMs for python and others on request. And storing them for all sites going forward. Similar to how uv does it for for venvs it creates, there are standalone python version blobs.
Anesthetics are very weird though. There's still a lot we don't know about how they work. They seem to act like you experienced, complete shutdown, for most people, which seems different from the states that people go into when unconscious or are near death usually.
And some people have a very different experience while under them - they are fully aware.
Its not my area, but apart from the the person subjective opinion there would be indirect ways to measure it. again I'm just guessing without looking around.
They are very powerful.