"michael adams" wrote in message
o.uk...

"Tim Streater" wrote in message
.. .
In article , Sam E
wrote:

On 08/29/2017 02:11 PM, Rod Speed wrote:

[snip]

The bigger problem is that if you arent careful when wiring the
socket in, you can end up with the active on the outer metal which
is often touchable when changing a bulb and with a bulb failure,
not everyone turns the light off before changing the bulb because
it isnt obvious that its still turned on to the technoklutzes.

Why are you touching the metal part of the socket when changing bulbs?

You're not seeking to do that deliberately, but it may happen -
especially if the bulb is hard to get out due to having been screwed in
too tight.

Screw in light bulbs were developed by Thomas Edison.

It would be interesting to know the precise details of the thousands of
experiments
he must have conducted at Menlow Park which led him to conclude that screw
fittings
are in any way superior to bayonets.

There weren't thousands of experiments on that. He just
made a choice, just like any other designer always does.