This is a good callout, and it is true that most hand sanitizers are not effective against norovirus.

However, at the risk of sounding like an advertiser which is not my intent, there are some higher grade sanitizers out there that do kill norovirus. One is called “Prime Defense” and was originally developed for cruise ships and restaurants where norovirus outbreaks are a major concern. Companies are not allowed to advertise kill of specific pathogens like norovirus for products regulated by the FDA, hence why it is not advertised as killing norovirus (hand sanitizer is an over-the-counter drug regulated by FDA).

Washing your hands properly with soap and water is still an effective way to reduce risk of norovirus.

Your second sentence made me think of this.

Parts of my thesis were definitely written with “Goodbye Horses” on loop (you know from that one scene in Silence of the Lambs). Not sure what that says about my vibes in grad school.

It’s $3 per month for 200GB for me currently in the US.

I didn’t know about logarithmic perception, that’s interesting! I bet you’re right about 7x being chosen due to the significance of the number seven in the Bible.

I was curious about this too. From random web searching (Syfy.com), the sun is 200,000 times brighter than the moon in the visible light region of the electromagnetic spectrum.

I think what you said is true but that also ketchup as a material is shear thinning—meaning as you shake or tap the bottle, this creates stress or “shear” on the liquid which causes the viscosity to decrease. It also takes a little bit of time for the liquid to re-thicken, so it will actually pour pretty well a few seconds after shaking it.

https://www.scientificamerican.com/article/ketchup-is-not-just-a-condiment-it-is-also-a-non-newtonian-fluid/

Can see the before and after images in this article

I had to check the math and I was surprised that 2^42 is “only” 4.4 trillion. Thought it would be a lot greater like there are less atoms in the universe similar to the uniqueness of a shuffled deck of cards.

“No garage, one space” in Wisconsin winters sounds fun!