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Remember, fasting didn't work out so well for Jobs.
E.g. polyurethanes are marginally biodegradeable by fungi and still last years when the conditions are not ideal for them.
Maya+Vray spits out a preview within seconds on my machine.
> and the damage it can cause on accident
You are conflating (un)safety of a tool used in the way it is intended (kitchen knife = cutting a steak) with accidents (cutting a finger) and with malicious use (stabbing people). Those three categories are not the same for object-that-may-act-as-weapon and object-designed-as-weapon.
Conflating them collapses the number useful things we can communicate.
So are you concerned about Tesla intentionally building killing instruments? Or potential for accidents? Or the potential for intentional misuse?
> The fact how dangerous cars is is very much underappreciated by people in general, as evidenced by the number of morons on the road.
Cars also provide immense utility. If all they did were providing the thrill of speeding then they would probably be banned as too dangerous. One of the tradeoffs is the overhead of enabling people to drive. We could drive down the number of morons by requiring astronaut training for vehicle operators but again, that tradeoff seems too harsh and it's more efficient to occasionally let people die in traffic accidents than letting them die because nobody qualified as ambulance driver.
> We have a for-profit race by companies, many of which can't be trusted with getting software right
In the short term this may cause more deaths than necessary. But on the other hand it might be the quickest way to find a winner and then hold the rest to the same standard. As long as the experimental fleets are small they are just a blip in the statistics. Right now they should be equated to the yearly batch of first-year drivers who have an inherently higher risk profile due to lack of experience. We still accept them on our roads in the expectation that they improve.
What is important is to make sure that they are as good as or better than humans once they roll out in large fleets.
If we use a more narrow definition of weapon, e.g. a tool optimized for the primary purpose of injuring or killing people then it certainly is not a weapon.
For example in java the iteration order of hash maps or the behavior of sorts in presence of non-reflexive comparators changed and people did depend on that. Sun was able to change it because it was not part of the API contract.