Computer on or off at night?
The way it was explained to me (in layman terms that I could understand) many, many moons ago was:
The most dangerous part of climbing a ladder is when you are going up or down because you have to take a hand or a foot off a rung and you become unbalanced. At the top or the bottom you are standing still fully supported and therefore are much less likely to unbalance.
Replace the ladder with a computer and the most dangerous 'time' for a computer is when it is 'winding' itself up at the start (or down at the end) because of the hundreds, if not thousands, of applications the computer is trying to open or close and so many things which can be misdirected or simply go wrong. Under those circumstances it was considered that once the computer is up and running properly then leave it alone - it is much safer.
HOWEVER - that really does depend upon a safe and secure power supply, hence the reason so many 'firms' have emergency power systems which allow the computer to close down properly in the event of a power failure. The likelyhood of a power failure at home. or especially on a site, is very real indeed - and the damage that a power failure can do is absolutely frightening and can be very expensive in corrupted files and programs. Most battery back-up systems are heavy and expensive and are not really suitable for small home/office users.
In summary, if you can afford a 'nerd' to sort out every computer crash then leave it switched on - otherwise turn it off, save money and sleep easier.
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Mo and Dick Youth and Talent are no match for Age and Treachery
Remember: 'Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways - screaming 'WOO HOO, What a Ride!'
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