Besides the obvious, the internet is very addictive (especially youtube), plus you will get fat with no exercise.

Recent improvements in solid-state electronics have enabled pneumatic power systems to be replaced by electric power systems. In a bleedless aircraft such as the Boeing 787, each engine has two variable-frequency electrical generators to compensate for not providing compressed air to external systems. Eliminating bleed air and replacing it with extra electric generation is believed to provide a net improvement in engine efficiency, lower weight, and ease of maintenance.[18] Benefits A bleedless aircraft achieves fuel efficiency by eliminating the process of compressing and decompressing air, and by reducing the aircraft's mass due to the removal of ducts, valves, heat exchangers, and other heavy equipment.[19] The APU (auxiliary power unit) does not need to supply bleed air when the main engines are not operating. Aerodynamics are improved due to the lack of bleed air vent holes on the wings. By driving cabin air supply compressors at the minimum required speed, no energy wasting modulating valves are required. High-temperature, high-pressure air cycle machine (ACM) packs can be replaced with low temperature, low-pressure packs to increase efficiency. At cruise altitude, where most aircraft spend the majority of their time and burn the majority of their fuel, the ACM packs can be bypassed entirely, saving even more energy. Since no bleed air is taken from the engines for the cabin, the potential of engine oil contamination of the cabin air supply is eliminated.[19] Lastly, advocates of the design say it improves safety as heated air is confined to the engine pod, as opposed to being pumped through pipes and heat exchangers in the wing and near the cabin, where a leak could damage surrounding systems.[19] https://en.wikipedia.org/wiki/...

"I'm running Windows 3.11 over DOS 6.22 here with no problems on a latest and greatest Z77 motherboard"

Can you tell me which motherboard? I just lost a bundle on an Asus P8H77 and an Asrock Z77 Pro due to problems with the UEFI bios even though it was turned off. I'd like to know what motherboard actually reverts to the old non-UEFI bios and allows you to run DOS 6.22! Thanks, Mike

"who wonder - like me - how 6 minutes of flight are more than hours of flight by a Concorde:" The SR-71 Blackbird first flight was on 22 December 1964, 49 years ago. It flies at Mach 3.3 for hours. Now, ~50 years later, a missile flies at Mach 5.1 for 6 minutes. That is a 50% increase in speed in ~50 years. This is hardly the tremendous breakthrough that is claimed.

No need to rotate while supersonic. Do it subsonic then accelerate. FBW will handle any control problems. See the F117 as an example. The big problem is the engines. They are mounted on the wing and rotate as the wing changes orientation. They operate in parallel for landing and takeoff, but after the wing rotates 90 degrees, they will now be in tandem, one behind the other. This means the exhaust of the forward engine will feed the intake of the other engine, causing it to overheat or possibly fail due to the lack of oxygen. The problem is worse when three or more engines are needed. I don't know how to solve this problem. I wonder why NASA gave them $100,000 without asking the same question. Mike Monett

The most important lesson is if it can happen, it will. Aircraft are built with multiple redundant paths to survive when something fails. an example is Aloha Airlines flight 243: http://the.honoluluadvertiser.com/2001/Jan/18/image2/localnews1_b.jpg No one expected the top of the cabin to come off in flight. But the design rules allowed the aircraft and passengers to land safely. Nuclear reactors need to follow the same rules.

Get Gishpuppy. It's free, has no limit that I can tell, gives permanent or temporary email addresses, and it works as an add-on in Firefox.

You can get a new email address each time a new site wants one, and the address contains the name of the site so you can tell where it is used. You can sign up here:

http://www.gishpuppy.com/

When you use disposable addresses, it is easy to tell where spam comes from. Just kill the address, and your spam disappears. Pretty soon you won't get any more spam, and you never have to use a spam filter which wastes time and can get confused and trap legitimate emails.

I used to get thousands of spam and wasted a great time trying different types of filters to try to eliminate it. None of them worked perfectly, and I spent a great deal of time going through the messages to make sure they were all spam. It was a huge waste of time until I started using disposable email addresses. Now I am lucky if I get one or two spam per year.

A lot of spam contains malware, which you don't need.
Kill the spam, and you eliminate the viruses and trojans.

A disposable address is the best way to do it, and Gishpuppy is one of the best disposable ones you will find.

Regards,

Mike Monett