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   On 09/12/2024 17:27, David Higton wrote:   
   > In message    
   >            The Natural Philosopher  wrote:   
   >   
   >> On 08/12/2024 19:50, David Higton wrote:   
   >>> In message    
   >>>             The Natural Philosopher  wrote:   
   >>>   
   >>>> It's an interesting thought as to why one would use a fan at all. If   
   >>>> its such a high compute task that you need one, maybe a bigger Pi or an   
   >>>> Intel based machine is indicated.   
   >>>>   
   >>>> I dislike fans. They fail.   
   >>>   
   >>> PC fans run pretty much all the time.  A fan on a RasPi is likely to run   
   >>> less of the time, and could well last longer overall.   
   >>>   
   >>> Fans fail.  Disc drives fail.  SSDs fail.  Batteries fail.  Reservoir   
   >>> capacitors fail.  But before they do, they are very useful.   
   >>>   
   >>   
   >> Such an ArtStudent™ view of life.   
   >>   
   >> Do you know what MTBF means?   
   >   
   > Yes.  Something I don't understand, though, is why so many people use   
   > the term MTBF when the appropriate one would be MTTF, since so few of   
   > the things referred to are repaired.   
   >   
   That phrase was not used when I studied electronics.   
      
   Mind you, then everything was repairable.   
      
   I think its pretty academic when you are talking about consumer shit   
      
   It has to be expensive to be worth repairing.   
      
   I messed up a pi Pico  I thought about spending hours fixing it and   
   spent a minute ordering a new one and threw the old one in the bin   
      
   When I was managing servers no one cared what went wrong, only that it   
   had. Whether it was something we could fix - like putting in a new hard   
   drive, Ram SIMM or a fan - or something we wouldn't bother with - like a   
   new motherboard   
      
   IN operational terms the lifetime of the fan IS the mean tine between   
   failures of the computer  if its the thing that goes the most often.   
   And in many cases it was - fans, hard drives and RAM chips.   
      
   All were a bit likely to develop issues in under 5 year timescales   
      
   These definitions are academic.   
      
   The MTBF <= the shortest MTTF in the component list...   
      
      
   --   
   “It is dangerous to be right in matters on which the established   
   authorities are wrong.”   
      
   ― Voltaire, The Age of Louis XIV   
      
   --- SoupGate-Win32 v1.05   
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