To sidewalk, you move the left foot to the left, or the right foot to the right, then the other foot follows. Repeat.
Don't need a lab to work that out.
How that's supposed to help the cities in the future? Perhaps because they'll be really crowded with little space to move.
I have also had to replace several in much less time than they were supposed to last, so perhaps they're working better for some homes than for others.
I wonder if it could be more to do with how often they're switched on/off. Looking at the other comment branch describing good experiences, it looks like they often leave those lights on for long periods of time.
Actually, GP is right. I also used WM5/6, and wrote software for them.
I'm not a shill, nor a fan boy, but I did actually use the things. (Disclaimer: Writing this in Win7 VM, on a Mac, using my Android phone for internet.)
WM6 was more developer friendly than iOS and Android until only 3 years ago, IMO.
But... they were not user friendly.
When I used my Dopod, people couldn't understand why I had such a bulky "phone". It was too foreign a concept for most people.
iOS showed ("educated") people about the idea of a phone that could do more. It did so by having a much better user interface/interaction. And by being so much simpler it successfully bridged the "concept gap" for people. But for a while there, iOS lacked many useful WM6 features. During that time iOS felt like a big step down from WM6.
Then Microsoft killed WM6 by introducing WP7, which was virtually unusable to developers spoilt using
At this point I'm not sure that I want MS to succeed, because I don't want more fragmentation.
I find the interesting part is "conditions found in space".
Because then life would likely not have been seeded on a some planet as a rare event. Rather, because the components could be be scattered all over, and life could develop all over the place, some planets may even have been successfully seeded repeatedly.
And there may well be extremophiles on Mars that are completely unrelated to life on Earth, as might well be on/in other planets and moons in our solar system.
I suppose... With a chop: yes. With chemicals: no.
So is it legal? With a chop: no. With chemicals: yes (judging by GP)
I sometimes like to play with the idea that we're being observed, specifically because it highlights why they probably would avoid contacting us.
Socially advanced species would probably not want to destroy us, because if we become space faring then we've earnt the right to join the galactic community.
On the other hand, we would be the equivalent of orcs: we like rough sports and martial arts (ah, the art of moving a sharp piece of metal right through...), we pride ourselves on our combustion engines (planes, cars, boats, sure those engines pollute, but it's high tech man), we still practice slavery (even if don't like to admit it), we're still very corrupt and often lack respect for each others safety, we breed uncontrollably, and we wage war.
We would be a veritable plague.