GB wrote

It makes as much sense as all the other "get arounds" that exist in most
religions

The one I like is the eruv.

I once heard of an eruv where the wired off area was very small....
but that was considered the 'outside'....

You just don't understand the finer points of religious reasoning.

No such animal.

An eruv is a boundary wall taken to its most minimal extreme. You start
off by asking what a wall is, and move on to asking whether it's still a
wall if it's not in good condition. Everybody would agree it is. Then,
what if it has holes in? Sure, that's okay. So, what if the holes are
really big holes? That's okay, too. So, you end up with an eruv, which is
a wall with a simply huge hole in it.

An eruv is in fact a completely mindless silly wank.

It's all perfectly logical,

Pigs arse it is.

but if you think of it as a boundary marker you may be happier. It's no
different, really, from the boundary line between neighbouring counties,

Completely different in fact. Those dont allow you to do what you
can't otherwise do.

but even that tenuous line acts as a barrier to policemen.

Only in a stupid system thats actually stupid enough to do the cops by
county.