Tho the boundary of a cricket pitch varies hugely - sometimes adjusted from match to match depending upon the format. While the overall dimensions of a football pitch may vary, certain other distances remain, such as the 6-yard box or the penalty spot.
Basically it's a factor of sometimes ancient sporting fields - older than the codification of rules themselves - still being in use today.
If it's leaking from the radiator itself, or from the connections at either end, turn both valves fully off (you may need pliers or grips for the one without the thremostat). Tho that won't help if leaking from the joint between the valves and the pipes.
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I knew a retired couple (they're both gone now) who used to bet on horses every day. Only small amounts, often on accumulators. They had the occasional decent win, paid for a few nights out. But it was much a way of keeping their minds active, studying the form and following particular jockeys or trainers. Also something to look forward to each day, finding out the results.
Perhaps more significant than the technology was the military approach of the Europeans. They came from a background of dense, even surplus population, where wars were fought to ruthlessly defeat opponents, involving great brutality not only upon the battlefield, but also against civilians and the destruction of infrastructure (c.f. the Spanish-Dutch wars, the French and German wars of religion, the Thirty Years War).
Contrast this with a low level, tribal style of fighting, which tends to be more about status and personal prowess, but without risking your own population base by incurring severe casualties (thus not inflicting so many, either). A small tribal or clan unit losing too many people risks its own economic viability.
It wasn't just the Europeans, mind. The Aztecs and the Zulu both did something similar to gain their superiority.
Friend of mine was following a car once. All over the road, erratic speeding up and slowing down, eventually crashed. Driver was uncoordinated and incoherent. Mate was all ready to have a go at him for being drunk. Turned out to be a diabetic emergency, bloke had suddenly fallen ill at the wheel.
The other driver's testimony suggests she might have had something to drink - but is not conclusive about how much and if still legal. Whereas the friend's one purports to explain why she was so massively over the limit when tested an hour later.