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>I don't follow - could you explain further how you think not having porn videos in your closet is a "technical measure"?
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>Are you suggesting that I think "the temptation" (whatever that is) should be readily available?

You said:

"At 17 he should be mature enough to filter his own Internet experience and to handle anything that may be encountered unexpectedly."

So, I take that as a suggestion that it is okay for the internet to be fully available to him. Certainly you know what a temptation is? :)