On Tue, 3 Nov 2020 12:34:44 +0000, wrote:

On 03/11/2020 02:34, williamwright wrote:
snip

Why not just use common sense?

It's the unkown unknowns that matter.

Quite.

Also, why re-invent wheels?

Again, quite, and if 'goD forbid' a child get injured by something you
have made, even if it wasn't from anything obvious to be a potential
danger / risk, at least you can demonstrate you have made 'best
efforts' and at the same time acknowledge an awareness of any rules
and have tried to follow them (that still might not help you being
sued etc).

One of the things I have to be careful of is assuming anyone else has
the same skills / experience (FWIW etc) as me when suggesting they do
something themselves, just because I may happen to find it easy?

Like getting daughter and her ex, both reasonable / practical people
(both have chainsaw tickets and familiar with all sorts of dangerous
plant) to replace the front wishbone on their car when it failed an
MOT on it. TBF, they did get the replacement wishbone, had access to
all the tools, the HBOL and started on the job but it was soon obvious
they didn't have the confidence and it was quite a safety critical
component ... and had they got the old one off but broken something on
the car in so doing that they couldn't resolve themselves, the cost
*then* would have been even greater than getting the garage to do it
in the first place.

The chances are I would know what sort of torque / effort was needed /
acceptable on each part and therefore know that I need to apply more
penetrating oil and give it more time, or heat or that it has to be
cut off to give access to the other side etc.

Cheers, T i m

p.s. I recently talked a young and not-really-technical family friend
though installing W10 on what was previously her D: drive the other
day. What took most of the time was guiding her though things like
getting the side off the PC and finding the SATA cables (to isolate
each of the drives in turn to be sure we were dealing with the right
one), accessing the BIOS boot menu (not the Linux / Windows one) and
getting the PC to boot from the USB boot drive I'd made on her laptop
(remotely) previously.