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- Newsgroups: alt.folklore.computers
- Path: sparky!uunet!world!dpbsmith
- From: dpbsmith@world.std.com (Daniel P. B. Smith)
- Subject: Superstitions: power cycling, screen savers, surge suppressors
- Message-ID: <By3EGq.Ko6@world.std.com>
- Organization: The World Public Access UNIX, Brookline, MA
- Date: Sun, 22 Nov 1992 00:53:13 GMT
- Lines: 48
-
- These are LIVE superstitions, as will shortly be demonstrated as I
- get buried by flames.
-
- I have been trying since the seventies to find ANYONE who has actual
- DATA on the question of whether it is better to turn computers off when
- not in use or to leave them on. EVERYONE has an OPINION. NOBODY seems
- to have any DATA. My own opinion is that the belief that it is better
- to leave them on is superstition, dating from a) rational practice in
- the days of vacuum tubes, and b) a confusion between FREQUENCY and PHASE,
- i.e. if something in your machine is on the hairy edge of breaking, the
- stress of power-on may push it over the edge -- but all that power-cycling
- has done is to advance the failure a few hours, not cause it.
-
- I also believe that the risk of leaving a computer powered-on and UNATTENDED
- more than balances the risk of cycling it.
-
- Screen-savers. A very clever way of providing a market for display hacks.
- And a very useful justification for people who just enjoy having neat
- stuff on their screen. No doubt screen-savers actually ARE needed on some
- CRT's, particular the older point-plotting and stroke-tracing models in
- which all of the beam current was going into a tiny area. But what about
- stock CRT's in normal use on PC's and Macintoshes? If they're really
- NECESSARY why aren't they designed into the hardware? I've seen a classic
- (1984, monochrome) Mac that was essentially left on 24 hours a day for years,
- and the menu bar had darkened just a bit -- but it didn't matter when the
- menu bar was being DISPLAYED in normal use.
-
- Surge suppressors. Again, I have to wonder why the manufacturers don't
- design them in; it should be the responsibility of the computer's own
- power supply to handle this. And why should a PC need a surge suppressor,
- but not a CD player, a VCR, a video game machine, etc. all of which contain
- similar electronics?
-
- Personally, I don't futz with screen savers because I hate adding yet another
- layer of TSR-like software into my system. I shut my computer off when
- not in use. But I use surge suppressors because the mental pain of possibly
- wasting $50 is less than the mental pain of wondering whether my computer
- is really vulnerable.
-
- There's the old story (well, there was a book title and the author SAID
- it was the old story) about the guy who comes to visit, and every time,
- as he leaves, he solemnly waves his hands in the air and says "May this
- house be safe from tigers." Finally the other guy asks, "WHY you do
- that?" First guy replies, "Well, you haven't been bothered by tigers
- lately, have you?"
- --
- Daniel P. B. Smith
- dpbsmith@world.std.com
-