Rajko M. wrote:
> On Monday 24 December 2007 04:05:52 am Dave Plater wrote:
>   
>> Rajko M. wrote:
>>     
>>> On Monday 24 December 2007 02:56:18 am Dave Plater wrote:
>>>       
>>>>> Computers are far more complex than plumbing, even in the most
>>>>> rudimentary use. Book that describes computer basics has few hundred
>>>>> pages. How many pages is needed to describe plumbing from A to Z ?
>>>>>           
>>>> carefull you don't insult plumber
>>>>
>>>> merry christmas
>>>> dave
>>>>         
>>> Don't worry ;-)
>>>
>>> They know that computers are not easy as plumbing.
>>>
>>> Merry Christmass to you too.
>>>       
>> If a plumber connects a hot water system wrong it can explode an destroy
>> the computer downstairs as well as half the house.
>> Dave
>>     
>
> Hmm ... 
> It seems that I'm missing something, but forgive me and let me now how that 
> can happen. 
>   

Boilers requires a specific trade to install & service, because when
water heats, it expands and releases steam, which cause a significant
increase in pressure.  A boiler that ruptures under pressure is
comparable to a bomb.  And for gas heat, the system is built by gas
fitters, who deal with the issues of safely working with natural gas
systems etc.


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