the point is that the macbook «air» was especially built to work wirelessly... the word air comes from «air-port», the apple name for their wirelessLAN solution.
that's now a perfect sample for «nomen est omen».
--> just watch that introduction then You'll know more...
http://www.apple.com/macbookair/guidedtour/
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macs and their price tags... an old discussion. but i also guess that the totally streamlined air/heat flows inside a mac (imagine in the macBook air !!!) just has to be designed. (check out some i-mac or mac book motherboard photos on google - you'll be amazed !) surely based on the components, a mac today is «just» a pc, but it's about the design and layout of the elements !
that costs a lot in production ! anyone sitting next to a mac pro ? checked out how damn silent these boxes are ?
and certainly ... you'll NEVER care about drivers again and most important: virae ! did someone ever hear about a virus on a mac ? hmmm... yeah, back on OS 6 or so...
so anyone wanting an alienware laptop with is ready to pay a «little» more too for the aspect of design / looks
back a few (~8 i guess) years when the first macs came out that had no more floppy. i thought: «how can they»... but it turned out to be well-foreseen and today i think a floppy is useless.
technologies change !
--> for the cd installations check the link above........