The answer says “any character” not “any characters”, so it is still correct.

Buffalo bison that other Buffalo bison bully also bully Buffalo bison.

There are three groups, the bullies, the bullied bullies, and the bullied.

Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo.

Not all diabetes is caused by excess sugar intake

I would use single x and y when they are meant to replace numbers, and multiple xx and yy when replacing text.

E.g.

• “We sold x books yesterday”
• “Did xx stop by yesterday and pick up the books?”

As long as it’s maintained. Wrong documentation can often be worse than no documentation.

Comment should describe “why?”, not “how?”, or “what?”, and only when the “why?” is not intuitive.

The problem with comments arise when you update the code but not the comments. This leads to incorrect comments, which might do more harm than no comments at all.

E.g. Good comment: “This workaround is due to a bug in xyz”

Bad comment: “Set variable x to value y”

Note: this only concerns code comments, docstrings are still a good idea, as long as they are maintained

It literally says “and” on the second to last row

Not to be too pedantic, but Californium is Cf

Not the Doppler effect, as that only applies to moving objects, but instead the inverse square law, where the energy of the sound wave decreases by the square of the distance from the origin, since it spreads in a sphere with the energy being spread across the surface of the sphere, resulting in a very quick dropoff in the loudness.

Can confirm that SAAB cars are great! Mine is coming up on 19 years old, and apart from some superficial issues still works as well as when it rolled out of the shop. SAAB was also very innovative with their cars, taking a lot of inspiration from their jets, which is clearly seen in their design.

I spent way too long trying to figure out why the guy and the ice cream shop were flying, and how he would move horizontally in he air…