I have had to deal with a reset button above the enter key on apple II+. Something also existed on a TRS 80 models. No a single button is a disaster. Maybe perhaps control reset like later apple II models or something. I have had problems with my cat turning my laptops airplane mode until I toggle it in bios.

Without NAT things are pain in the ass. NAT helps with load balancing. NAT avoids the renumbering problem. Now tell me. Lets say you have a 10000 devices in an organization, and if you moved to another provider you would have to renumber every single device. DHCPv6 helps, but... expect many calls to the help desk. The day your organization has to renumber Simulation. There should be blackhole addresses. For instructional purposes. The 10.x.x.x makes it easy for course work to be uniform when people are learning. And NAT makes it routable. Subnet's. What if you ISP is an a$$ and only gives you a /64. It makes to be a real bitch as far subneting shit.

PasswordAuthentication no Match Address 10.11.3.0/24, PasswordAuthentication yes

Make subnet the schools machines on unroutable. Setup a squid http://www.squid-cache./ proxy and use http://www.squidguard.org/ http://www.squid-cache.org/. Point all machines at the squid cache. It is how my friend got threw teen years with his kids. The easier approach: K9 Web Protection - Free Internet Filter and Parental Control ... www.k9webprotection.com/ is another interesting choice. Still a lot of arguments are correct, sometimes it isn't worth trying to sanitize things, better to try to learn about them.

It is the case that life will find a way of adjusting the temperature accordingly, like in the daisyworld model http://en.wikipedia.org/wiki/Daisyworld I had an idea that would be cheep and less expensive, detonte some explosives at key Volcano's to cause an erruption. Do it in the ring of fire to not effect populated areas. Erruptions have been known to cool the planet. Like Pinatubo http://en.wikipedia.org/wiki/Mount_Pinatubo http://vulcan.wr.usgs.gov/Glossary/VolcWeather/des cription_volcanoes_and_weather.html There might be some problematic issues with regard to ozone, but it would keep things cooler :-)