Just imagine if the same logic had been used on photography.

"Pushing a camera button is insufficient artistic input for photographs to be copyrightable"

Or look at some of the more wild paint splatter methods.

Temperature, It seems like a simple concept gets very complicated at very low temperatures.

For example as the gas molecules are no longer colliding quickly at low temperatures, it's possible to get systems of gases where they have one rotational temperature a different vibrational temperature and a third translational temperature.

Molecular beams you can even have multiple translational temperatures. One temperature in the direction the beam is traveling and a separate temperature going perpendicular to the beam.

Essentially temperature as a simple concept just breaks down and stops working as you get close to zero.

So you have different definitions of temperature that are mathematically based.

Some excited state physics ends up having technically a "negative temperature" when you apply those math definitions. These various excited states systems are impossible to reach by heating up the material. (Like the active part of a laser). You apply the same math used to systems close to zero to these other objects, they spit out negative numbers. But it's really not temperature in those systems anymore, at least not in the way that a normal person talks about temperature.

Temperature, It seems like a simple concept gets very complicated at very low temperatures.

For example as the gas molecules are no longer colliding quickly at low temperatures, it's possible to get systems of gases where they have one rotational temperature a different vibrational temperature and a third translational temperature.

Molecular beams you can even have multiple translational temperatures. One temperature in the direction the beam is traveling and a separate temperature going perpendicular to the beam.

Essentially temperature as a simple concept just breaks down and stops working as you get close to zero.

So you have different definitions of temperature that are mathematically based.

Some excited state physics ends up having technically a "negative temperature" when you apply those math definitions. These various excited states systems are impossible to reach by heating up the material. (Like the active part of a laser). You apply the same math used to systems close to zero to these other objects, they spit out negative numbers. But it's really not temperature in those systems anymore, at least not in the way that a normal person talks about temperature.

HEPA filter built in and air qualify measurements in addition to your standard central air we have now. The pandemic really got a lot of people looking into how to prevent the spread of diseases and filtering the air is starting to look like the newest version of "wash your hands to stop the spread of disease"

I appreciate the warning. And it is helpful to show these to people.

Just be aware that some of these graphs DO have legitimate use cases.

Double y axis is used for things that aren't the same units. For example if you wanted to graph GDP and population over time in a country.

Sometimes a small change in a very big number is important to show. I like to use residual/difference graphs for these, but most people find that type of graph even more confusing. This is where the offset y-axis can be used legitimately.

Another one you could add to this chart is logarithmic with my graphs. Logarithmic y axis graphs are another favorite of mine, but can also be very confusing/misleading to people who are not familiar with them.

Zoom did ONE thing amazingly well. It's was super easy to get people into a call. Click link in email --> be in zoom call. No fuss, no frills, No extra buttons or menus for Grandpa to accidently click and get lost in. More importantly no account needed.

Even starting a new call was easy. You could email the link to someone from in the call you were in. scheduling calls had a similar super easy UI

As for replacing other options, it wasn't just Discord, lots of other video conferencing software exists, and was in fact already being used for b2b (Cisco).

Have you ever tried to schedule video call event in discord with people who haven't used it before? I tried to host virtual Halloween parties etc in 2020. It worked but it was very clunky.

In order to have a specific guest list I had to create a new server. Then email out a server join code. People trying to join were forced to make a discord account if they didn't have one. And once in the server since people didn't know how to actually join the video call portion and how to turn on their video in the voice chat.

On the flip side I saw people trying to use zoom for a virtual conferences... Which was always a disaster because zoom doesn't have the tools for that. Meanwhile discord or something similar would have been perfect.

I have a "report spammer" option when I long press a text on my phone.

I've been reporting each and everyone of those texts that I get. (In addition to replying STOP. )

It probably does not do anything, but I like to hope that if they get enough spam reports the phone carriers will do something.

Color is a tricky thing, especially if you involve people's perceptions of color. (For example color blind people see color differently)

Light has a wavelength which is related to color. Separately it has an intensity, which is the amount of that light.

Light can be a whole mixture of different wavelengths all at once. The result is what we call the color of the light. This is often expressed as a graph called a spectrum. On the x-axis is the wavelengths of light, and on the y axis is how much of each wavelength is in the light.

It gets a little bit tricky as a whole bunch of different combinations are seen as the same color by the eye. But they don't have the same mixture of wavelengths, and if sent to a prism will look different.

So that defines the color of the light but not the color of an object. Objects reflect and absorb different wavelengths of light differently.

You can make a graph of how much an object absorbs each color of light as a function of wavelength.

So the color of an object ends up being the color of the light you are looking at it underneath, modified by which wavelengths it absorbs.

We often refer to colors of objects as if viewed under white light, which is a roughly even mixture of most of the wavelengths. So a red object, absorbs most of the wavelengths of light except red ones. And it reflects the red light which is why your eye sees it as red light coming from the object.