LeegleechN

This idea is common in Shogi piece designs for those who can't read the traditional Kanji designs.

The molecules in a crystal still vibrate kinetically. A solid with no molecular motion would be at absolute zero temperature.

Ableton Push 3 (standalone version). It's only an 8x8 grid though.

The Airthings View Plus is a good one. It has high quality (for consumer) particulate, CO2, VOC and Radon sensors and a good interface. Also tracks temperature, pressure, and humidity for completeness.

Practice like you are learning a musical instrument or chess. Break it down into very specific subskills (like a specific chess endgame or guitar picking technique) and practice those in isolation in addition to your usual practice. Also find a coach if possible.

Justinguitar.com for guitar.

Feynman diagrams are a representation of an integral so moving beyond them is a question of reformulating the mathematical basis of physics.

There is some work in that direction (look up 'Amplituhedron') but overall it's not that surprising that physicists are using computers to do the same math with much more precision than they could before rather than shaking up the fundamental mathematical tools of their field which have stood since the 1600s.

He's not wrong about the narrow algorithmic use cases (so far), but he's completely missing the utility for simulation of quantum phenomena (chemistry, microbiology, materials science). That use case alone completely justifies investing into them even if you don't care about advancing science.

I think one of the biggest applications for quantum computers which isn't well appreciated is simulation of quantum systems: chemistry and materials science. Similar to the old analog computers which were used to simulate differential equations long before they could be fully "virtualized" (simulated deterministically without noise) using digital algorithms.

There are always alternative ways to describe the same phenomena. For example QM could be done with only real numbers (you can emulate imaginary numbers with matrix operations). There is no clear cut notion of what is "required".