"JH seems happy to see how things develop." .... Ian
I'm not sure I'd use the word "happy", I've moaned enough on this forum about our energy use, but I do think the future is more complicated than a binary, better or worse outcome. Yes it does take some energy to charge my mobile phone every week, but only a fraction of the energy I would use if I had to make even the smallest car journey instead. Sure, most mobile phone calls are trivia, but I'd say the energy saving far outweighs the energy use. There's a give and take - hopefully the "give" is greater than the "take", or is it the other way round?
I remember going to the Southampton Boat Show in 1988 and becoming so interested in a chap on the Catalac stand who was demonstrating Computer Aided Design that I missed the bus home. A year later I'd spent £2000 - a lot of money for me in those days - on a PC and software, with no real use for it other than an all consuming interest, which meant I spent all my spare time messing about with it (Facebook?). Everybody thought I was mad, I didn't know anybody else who had a PC. Nobody thought I'd get my money back, although I did think it was really cool (Facebook?) and there might be a practical application for it. In fact it changed my life.
On the strength of that I did much the same with a related thing (Computer Aided Machining) in 2004. Bingo!
I know these things are more likely to be successful than putting all your life details on Facebook is likely to be :-( but all I'm saying is that just because I don't understand how a thing is going to work doesn't mean it isn't going to work. In fact I don't think telling all the world that you're about to go on holiday to Greece for a fortnight is a good idea, but I do think it's all part of a culture which we don't understand. If we don't understand it how can we criticise it?
Have you read "Fooled by Randomness"? One of my favourite books. I can't remember if it was in this book or the sequel, "The Black Swan", but having outlined our inability to deal with an ever complex world, particularly randomness and probability, the author advises the reader goes to parties. His reasoning is that nothing's going to happen if you hide away in a hovel on Exmoor (me!), there's a lot of chance in the way our lives unfold, and other people play a large part in that. Parties give the opportunity to meet people who might improve your life, whether it be a beautiful woman or a millionaire who wants to pay you to bag Munros with him.
Not being a party animal I was a bit disappointed with that advice, although it made perfect sense to me, but it occurs to me that the author (Taleb) is a 20thC person. Both parties and Facebook are social networking. (I can see I'm persauding myself to open an account....)
John