Originally posted by swanlefitte There was a public service announcement on tv back in 2005.
I child hit by a car at 30mph has a 80% chance of survival, at 40mph an 80% chance to die. A pretty sharp statistical boundary.
Yep, that's why the speed limit in urban areas is typically 30 mph (so 50 km/h). In fact I know of several cities where they are dropping it down to 30 km/h* (~18 mph, but I guess they'd do 20 because it's a rounder number) just because the chance of death drops to almost zero:
https://nacto.org/docs/usdg/relationship_between_speed_risk_fatal_injury_ped...s_richards.pdf
This graph shows basically the numbers you quoted (page 12 of the pdf file):
*In my particular hometown, they have steep speed bumps every 50-100 meters on many streets, and almost all zebra crossings are elevated. A bunch of people complained because they refuse to learn how to drive through them and they are mildly inconvenienced, but it's pedestrian paradise.
---------- Post added 06-29-20 at 11:38 AM ----------
Originally posted by stevebrot I brew my coffee at about 180°-190° F using pour-over or French press. Any hotter and I get a less smooth brew. That is too hot to drink without cooling a bit and one reason why I don't prewarm my stainless travel cup with tap water (130°F) before doing pour-over directly into that cup; it takes forever to cool. FWIW, McDonalds still serves their coffee at a temperature that is too hot for me.
Steve
For French press I also brew at a similar temperature or else I find the coffee too bitter, and then it's sitting in there for some minutes and once served I still wait for another twenty before being able to drink it (or I add cold milk) - If I use the press I normally pour it to the mug and leave it there while I prepare brunch, there's plenty of time to come back to it
. I don't like neither lukewarm nor burning hot coffee*, so the temperature range is kinda limited.
I only use the French press during the weekends though, normally I throw the capsule in while making breakfast, foam the milk, put all of it together in the metal mug and sip it while walking to work.
*I, however, enjoy iced coffee immensely in summer. Although it has to be drunk quickly lest the ice melts and you end up with americano...
Last edited by Serkevan; 06-29-2020 at 11:41 AM.