Aug 29, 2004 22:51
I just started school and read something today that I thought was fun
even though it was assigned reading, and for - of all things -
Statistics. Go figure. (Tufte's Visual Explanations, in the interest of proper citing).
There was a cholera outbreak in London in the 1850s. Within days of the
outbreak, a guy named John Snow, who happened also to be Queen
Victoria's anaesthesiologist, started plotting all this data to try to
figure out the cause. He drew maps and noted the relative locations of
people infected and the nearest water pumps. Plotted time of death vs.
when people were known to go pump water, or drink it, etc. Turns out
there was this one pump - the "Broad Street pump" - that was the root
cause of the outbreak. By the time he discovered the infected pump, the
epidemic was pretty well contained. But still, he is heralded for his
scientific approach to analyzing data, and also for his theory - later
proven correct - that the bacteria was transmitted either by human
touch (i.e., on the handle of the water pump), or the water itself, and
most certainly not by air.
He did come across a little bit of information that was puzzling to
him. There was one place within the same 2-3 block radius where lots of
people were infected, that somehow was spared. He pinpointed the
location on his map and went to check it out. Turns out it was a
brewery. He talked to the owner there and found out that all the
workers were allowed a bit of ale on the house every day. The owner
said that the guys typically wouldn't ever go out for water at the
Broad Street pump, 'cause of course they quenched their thirst in-house.
"Saved by the beer!"
Now, if George RR Martin will ever finish writing, hopefully we will
all find out that John Snow is indeed the hero of that tale, as well.
Oh, and apparently there is still a pub in London, in the very same spot, that is appropriately named "The John Snow Pub."