I didn't say 12 year olds, though I suppose with earlier puberty, some 12 year olds could look like 18 year olds.
I don't think a man who thinks he is engaging in any social/ sexual way with an adult, can be described as a paedo. If he subsequently finds out that the person he'd assumed to be grown up, is in fact a child, and he continues the same type of interaction, then I think you can start throwing wierdo peado accusations at him. (This actually happened to me when I was 16, some bloke chatted me up for about half an hour, asked me to come back to his and when I said I'd have to phone my mum and dad, he asked me how old I was. Was completely horrified to find I was only 16 and apologised profusely for having disturbed me, then practically turned tail and ran!)
But I want to know how you reconcile the fact that you're happy for a builder to whistle at you, but you think he is worthy of condemnation if he whistles at a 13 year old, whom he may assume is 17, 18, 19. It seems pretty harsh to expect a stranger to know that a mature looking child is not of an age where it is considered socially acceptable to harass her.
Oh and you may not know of a 13 yr old who was whistled at, but I was one and I know of a lot others. At what age do you think it's acceptable, and how are builders supposed to discriminate?
I can't stick around to respond to your response tonight, because it's midnight and I have to sleep, but see you tomorrow.