that seems to be just total number of incidents, not corrected for increased air traffic over the last 30 years

Good point.

Maybe so, but the declines have been measured in the last century

But we haven’t got any observations of a steady baseline prior to the last century. There could have been declines (or rises!) during the previous centuries and millennia.

> Math is a tool (for everyone except for 0.000001%, who could use it as an occupation)

0.000001% of 8 billion is 80 people. Your math is off by a few orders of magnitude : P

Nice catch! :-) I am not sure how many people are actually doing Math for a living. Between Academia, some agencies, selected hedge funds and few other places. Few hundred thousand?

I see nothing wrong with this. The fact that it is in "old" python just means that it has done its job for a long time, presumably without needing to be rewritten. I would love it if someone came into my workplace in 15 years and found a script I wrote today still being used.

Bank. Unsupported runtime. Extremely likely to not be secure.

Surely, this must be culture and country dependent. Given the safety net in the country where I live in, being fired is far from being as important as marriage.

Abandoned bikes are a problem here in Denmark as well, but not an insurmountable one. City workers regularly put tags on the wheels of bikes parked at , fx. the train station. If the tags are not disturbed in a month or so, the bikes are removed.