Actually, you should not infringe his right to bear the state of the art weapons, the same ones that the military has.

18th century muskets and rifles were state of the art in 18th century - both the military and private individuals used the same weapons.

Why would you go through all the effort needed to make a bomb out of water if you can use gasoline or (better) LPG for that? Those are already explosive and nobody is going to care why you are buying 60L provided it first goes into the fuel tank of your car.

This. Every time I see a complaint that "some tool" makes it harder for "marketing companies" to send email I think that I should use that tool for my email servers if I am not doing that already.

Pretty much nobody wants to get spam and that includes the marketing emails, not just the regular "vi@gr@" and "Nigerian prince" spam. Pretty much nobody cares that you do honor the "unsubscribe" link, because a lot of others don't, so it is much easier to just tag your email as spam and hope to never see it again.

Last time I checked, not a lot of games supported keyboard+mouse control on either Playstation or Xbox and it is the most convenient way to play FPS or strategy or point and click adventure games.

It doesn't cost 25BTC to mine the block. Mining the block generates brand new 25BTC. Transaction fees are added to that, so the miner receives slightly more than 25BTC.

Without backward compatibility, Windows loses one of the major selling points.

And the software might check for Windows 9x just so it can display an error that Windows 9x is not supported by said application.

64 bit Windows do not support 16bit applications, so any software that runs on Windows 3x will not run on Windows 30, unless Microsoft goes back to supporting 16bit software on 64bit releases or still has a 32bit version of Windows 30.

The old devices are not deliberately restricted. I usually buy an older device that suits my needs instead of a new one for this reason and because if is easier to repair when it does fail.

Let's say I have an old tape deck. It is what it is, the sound quality or functions are not artificially restricted. If I want to I can improve it beyond the original specifications, but that requires modifying it. Same with my car - if it does not have some part then it doesn't, if I want to I can install it and use the new function.

Compare that to, say, modern phones. Android is very similar to Linux, but I cannot get a root shell on my own phone (without modifying it) even though it is physically capable of this, but that feature is restricted by the manufacturer. For example, I have a video file that plays without sound on an Android tablet because the sound codec is not supported. Decoding sound does not take a lot of CPU power, so I should be able to just install the codec as I can do on a PC, but it is restricted.

12V needs thick wires, just look at the wires that are used for car audio amps. This is because 1) Lower voltage means higher current for the same power and 2) Lower voltage means lower allowed voltage drop on the wire.

Let's say the wire is 20 meters long (probably reasonable for my house, since the wire does not go in the shortest possible distance) and I need 10A (100-120W) If I want to keep the voltage drop at 1V (resulting in 91% efficiency), I would need a 7mm^2 wire. For 1kW I would need 70mm^2 wire. Or run 230V in parallel with 12V = more wiring.

For LED lights, the best solution would be the power supply (230V -> whatever the LED needs) to be part of the fixture, or a module that plugs in the fixture.

I use some long life bulbs (rated for 3000h) and the efficiency rating for them is "G" IIRC, while regular bulbs have efficiency rating of "E". OTOH, I like the lower color temperature of the long life bulbs, something I could not have with halogens (since lowering their temperature shortens the life).

The filament has a relatively high thermal mass, so it does not cool down much at 100Hz. Running the lightbulb on DC would probably be better for its longevity though.

Which is why I have installed a slow-start dimmer to prolong the life of the incandescent bulbs, so I do not need to buy as many to last me many years. They also sell long-life bulbs now, 3000h, but lower efficiency (which I don't care about) and lower color temperature (which I actually like), so I got a bunch of those.

However, having bad roads and poorly trained drivers higher speed results in higher probability of a crash (for example higher probability that you won't see a pedestrian crossing or won't be able to stop in time) and a worse crash. So, the result is (even if probability stays the same) you drive too fast = you cause problems for other people, while you don't wear a seatbelt = you cause problems only for yourself.

Also, even Germany has speed limits on other roads and inside cities.

After a few accidents caused by drunk cops driving (that actually injuredor killed people) in my country, the new law is that if a cop is caught drunk behind the wheel, he can start looking for a new job (in addition to whatever punishment a non-cop would get in the same situation).

Speeding = higher risk of crash. Crash can involve other people. This means that if you speed you are more likely to kill somebody.
Not wearing a seatbelt = higher risk of injury/death in case of a crash, but only to the person not wearing the seat belt. I think the fine should be lower and let the idiots kill themselves.

Well, driving a car with a manual gearbox makes talking on the phone while driving (without using handsfree equipment) inconvenient (unless I am driving on a straight long road). I never text while driving. SMS is low priority and high latency to me - I will reply when I can. If it is urgent to you - call.

However, this device seems pointless. I have to buy it and install it in my car. Even assuming it can work with my older phones (a Nokia E90 and a Nokia 1100), I could, you know, just don't use the phone while driving if I do not want to and I do not need to spend money. OTOH, if somebody wants to use the phone while driving, they will not buy a device that prevents them or will turn it off.

This sort of device has to be mandated by law (hopefully just for new cars, so I do not have to buy such a device) or it will see very low adoption rates.