Nice one Jim! You're very clever.
My friend says all the time: Water's very wet today when his dough his
slack. Or water very dry today when he mixes tight.
It's basically taking the micky of people blaming the flour for every
little problem
In most cases it's just incorrect weighing. and even with scales it's
easy to be incorrect enough to change the ratio.
That's why people must learn to adjust their dough every single time
they bake.

Very good experiment!