Good God, man, are you still trying to dredge some content out of this
weary subject? If you were stuck in a bedsit in Bognor on a rainy
Sunday in October with nothing on the telly I could maybe understand
it but on an April day when Spring is in the air?

If you imagine I find talking about the difference between valves and
tubes more interesting than cutting my toenails you're in error.

If you think I have any intention of abiding by your rules of
engagement you are even more in error.

And if you think I am going to indulge you in a petty exercise of
pedantry and nitpicking whose only destiny is to spiral inevitably
downwards into an abyss of tedium you are, as the Norwegians say, out
in the potato field.

Andy