Quote:
Originally Posted by HarryT
What do you do with electronic devices which cannot be turned off? Do you take the battery out of your digital watch?
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Clearly not!
It's all just comes down to statistical risk - every electronic device radiates and thus adds something to the level of risk. Somebody somewhere has deemed that getting people to turn off their electronic devices is worth doing, presumably by weighing up the risk reduction vs the minimal inconvenience in doing so. A few non-turn-offable devices, such as digital watches, hopefully won't add too much to the risk. Those who make the rules clearly don't expect people to take the batteries out of their watches (otherwise they'd make people do so), so presumably they agree.
It's just a trade off between very low levels of extra risk and very low levels of added inconvenience. Up to a point it's worth turning things off, and afterwards not.
/JB