Aircraft are not air-tight. Compressed air is constantly pumped into the cabin, and a series of poppet valves allow the correct amount of air to escape to maintain a safe pressure level - this amount varies depending on altitude and how air-tight the rest of the fuselage is. The doors are sealed to minimize the amount of compressed air that needs to be pumped into the cabin, and for sound and temperature insulation.

I don't know about that. I was on a jury a few weeks ago, and when the prosecution pulled out the PowerPoint presentation, to me it felt incredibly patronizing. We had a pretty sharp group of jurors, and we all felt the prosecutor would have made her case much stronger by cutting the PowerPoint and instead providing more evidence to support her claims.

I know I shouldn't feed the troll, but this is one falsehood that I am really tired of hearing. Sorry to burst your bubble, but MS is *not* going to "push Win7 starter for the netbook market." Unlike you I actually have a source for my claim, http://windowsteamblog.com/blogs/windows7/archive/2009/02/04/a-closer-look-at-the-windows-7-skus.aspx .

The salient paragraph is toward the bottom, wherein he states, "Many of you have been asking about how to think about SKUs and very low-end notebook PCs or "Netbooks." All SKUs of Windows 7 will work on many of these devices, with Windows 7 Home Premium as the recommend SKU on small notebook PCs with sufficient hardware."

The PS3 CPU is a 7-SPU Cell processor, and is an incredibly powerful CPU. I'm not sure why you think it lacks muscle. Personally I use PlayOn to stream Hulu and Netflix to the PS3, and TVersity to stream downloaded content.

Perhaps this is just arguing semantics, but it is not correct to refer the the combustion event ignited by the spark plug as an explosion. It is a controlled burn of the fuel/air mixture. An engine's combustion chambers are carefully designed to burn the fuel/air mixture in a controlled fashion to extract maximum power from combustion. In a modern engine, the spark plug will fire before the piston is at TDC (top dead center) of the compression stroke, so that the relatively slow-burning fuel/air mixture has a chance to fully ignite before it's required to force the piston back down.

Detonation, or "knocking" is an uncontrolled burn, which as the name "detonation" implies, could be described as an explosion. It usually occurs due to a "hot spot" inside the cylinder which ignites the fuel/air mixture prior to the spark plug firing. Hot spots can be caused by many things, but from what I have seen carbon buildup is the most common. Running a higher-octane fuel will help, since the fuel is more resistant to being ignited, but it's only masking the underlying problem.

IAAFCAM (I Am An FAA Certificated A&P Mechanic).