Without exposure, there's no evolutionary pressure to develop such an immunity.

At most, they'll evolve enough to organize themselves in a "collective brain" able to perceive a threat of any nature (that is: non-bleach specific) - given the time required to do this, I think you should be safe without cleaning your bathroom ever is your life-time... or, if I'm wrong, it will be only for a short time (if they do develop such capabilities during your lifetime, you'll be dead soon enough to make my assessment a good approximation).

Who says I can't? It's quite easy where I live: the pump dispenses liters of petrol and my car's odometer is in km. Lately, it has been about 7.2 L/100 km - a sign the car is quite old now (about 3 years ago, it was closer to 6.9 l/100km for the same trip).

(excerpts from "The Art Of Being Irrelevant")
Plank units are universal inasmuch as the assumption that the spacetime is homogeneous and isotropic.
Granted, if those assumptions are not true, meters or miles would be equally useless.

Ummm... is that so? Note: Australia is a democracy and the cited law wasn't issued by a govt. decree or something, it did pass through parliament.

IANAL, downloading and printing the parts need not to constitute manufacture... after all, one may consider them art/sculptures.
Putting them together is something different. NSW firearm act, Sect 50A

Oh... So that was a typo rather than something alluding a typology.

(speaking of smart... like using a plastic gun to shoot real bullets would be a smart idea anyway)

In the context of this very issue, what exactly would be the point of lying? Making/owning a gun in Australia without license is already illegal.

Yeah, sure, the NSW police would better keep their mouth shut, their test and the risks they discovered are not at all relevant... after all, the police isn't meant to protect anyone, much less for protecting a consumer, they'll lie to you most of the time and they only have in mind how to bust you and spend the taxes you pay... Clearly, nothing more than a band of thugs.
The consumer protection agencies are in charge of testing everything that can cause harm, even when it's already illegal, amirite?

What planet are you living on? "Planet America" perchance?

In practice, you didn't hear of Tor and/or proxy SSL/HTTPS services, did you?

I wouldn't bet (second link to show that the charges may be powerful enough).

Errr... I bet he's shitless scared about photo-shooting as well... you know? One may be killed by having a bullet ricocheting from a photo.

No need of additional regulation, in Australia is already forbidden to make/assemble guns without a license. The actual point they were trying to get across:

Please note that this world is quite large. Depending on your place of residence, your mileage will vary: in some places, trusting the police may have never been in fashion, while in others it's still a safe bet.

Nothing special about the 3D printed plastic gun: unauthorized manufacturing (or even assembling) a firearm of any kind in Australia is already prohibited (so no, this is not a case in which the police would decide what the laws are. As they aren't in control of the downloads, they can't have a say in banning the download either).

What the TFS fails to mention: the NSW police guys seems genuinely more worried about someone hurting oneself in an attempt to fire one (the first gun printed by the NSW police exploded during tests) :