sobriquet9

There's still catastrophic cancellation, where subtracting two large numbers that are very close results in an answer with reduced precision.

Besides Python’s fractions, there are also constructive reals, exemplified by Android calculator where you can swipe any answer to get as many digits as you want.

What's the point of comparing quantities expressed in different units?

Debt is in dollars, GDP is in dollars per year.

Are you saying the FCC writes one thing in the regulation, but will enforce something different?

The language I see there now is unambiguous, "batteries". Lithium-ion battery for my impact driver can be used to fly an FPV drone. It does not have an FCC certification because it does not emit any RF, and the FCC never required it to be certified before. Now looks like it can no longer be imported, at least not until either Department of War or Department of Homeland Security deems it not a threat.

"the following UAS components:

    Data transmission devices
    Communications systems
    Flight controllers
    Ground control stations and UAS controllers
    Navigation systems
    Sensors and Cameras
    Batteries and Battery Management Systems
    Motors"

DJI requires activation (through a cell phone app, exposing personally identifiable information) for all their products, even action cameras.

DJI had the list of US no-fly zones that included airports, military bases, prisons, etc. Since DJI is no longer selling drones in the US, they removed that restriction.

The covered list now includes batteries and motors, even though they don't emit RF. Most are just battery cells, wires, magnets, and connectors, with not even a single transistor inside.

They were not previously subject to FCC certification, therefore none are certified, which means none can be imported now.

Rotor Riot sells a flight controller made in USA. Donald Trump Jr. is on the advisory board of Unusual Machines that owns Rotor Riot.

I think if you showed not only the point estimate, but also some measure of uncertainty like standard deviation, it should have given you a passing grade. It's hard to say why an answer like 6.8 +- 5 is wrong.

Even if you don't yet have formal statistical chops, it should be at least possible to show cumulative distribution function of results that will convey the story better than a single answer with overly optimistic implied precision.

For the same reasons people are interested in new iPhones, but not last year iPhones. And tax incentives.

Nobody is interested in used EVs, therefore resale values are very low.

If it is a completely different game, why are all strongest players the same?

This is likely. From example games, it not only knows the rules (which would be impressive by itself, just making the legal moves is not trivial). It also has some planning capabilities (plays combinations of several moves).

Tape machines predate GPS.

A metaphor should be referring to something common, not something that can be made in theory to fit a different set of requirements, but does not really exist.

But not DC itself. Even if it goes down to 1 Hz, the circuit in question will saturate in a few seconds, or be in saturation when initially turned on and never get to zero as there is no DC feedback.

Even when you decode with an SDR, you still need to adjust the receiver frequency to match that of the transmitter, as reference oscillators might have slightly different frequencies that can also slowly shift, e.g., due to changes in temperature. In case of a tape recorder, tape speed during recording and playback can also be slightly different due to mechanical factors.

FM audio does not carry DC either. PLL in the receiver/decoder will eventually catch up with the constant frequency shift.

The tape delay methaphor confused me. Tape recorders do not record DC or other frequencies much lower than, say, 20 Hz. So that circuit would run into one of the rails just as quickly as the previous cirquit without DC feedback.

An illustrative example to explain ergodicity. Consider the following game. Players start with $100. At every turn, a fair coin is flipped. If tails, the amount of player's money is increased by 50%. If heads, the amount of player's money is decreased by 40%. To play or not to play, that is the question.

They also lose data. Especially large files you rarely touch, like family videos. Bit rot on SSDs is real. I backup to HDDs now.

Unless we live in a simulation.

Level IIIA resists penetration from .357 SIG, 9 mm, and .44 magnum. Those are handgun rounds. It may stop some intermediate rounds if you’re lucky, but certainly not full power rifle rounds.

Helmets cannot deform as much as vests before seriously injuring the wearer, limiting their capacity to dissipate kinetic energy. And if you make them too rigid, concussion becomes a problem.

The guns are different, but primers are mostly the same.

If you place a bullet between rifle stock and the shoulder, then fire the rifle, it’s going to be mildly unpleasant, but the bullet won’t penetrate the skin, let alone kill the shooter.

One counterexample may be sufficient to disprove a hypothesis. If you claim a certain quadratic equation has no roots and I give you one root, you can’t say “n=1”.

Because so many civilians died, including women, and harsh living conditions due to wide spread destruction.

Fertility rates do not decrease after a war, which means fewer remaining men get the same number of women pregnant.

Not really a concern outdoors. Ben Stoeger, world shooting champion and firearms trainer who shoots a lot, said his blood lead levels are normal and attributes it to shooting outdoors.

Guns are kinetic energy weapons, not momentum weapons. It’s the kinetic energy that matters.

Momentum is conserved, recoil momentum is the same as bullet momentum, yet recoil does not kill the shooter.