I remember going to a hi-fi show in Bristol UK, perhaps about 20 years ago. In one room was being demonstrated a turntable, which would correct for off-centred records. Now they’d be called vinyls of course, just in case you don’t know what I’m talking about. Anyway, I put my hand up, and I asked why the speaker cones were moving back and forward, implying the record was obviously off centre, despite the magic performed by this invention. I was told it was because the hotel room wasn’t ideal for the demonstration. No one else said anything. I later stood next to the speaker, holding my watch. The inventor came across and asked what I was doing. I said I’d been watching the speaker cone movements, and in the last minute I’d counted 33 1/3. He went ballistic. I’d never heard of this guy before, but now his name is on a great many phono preamplifiers. Needless to say, I’ve never bought any of his products. I remember in another room of the same show, a class-T power amplifier was being demonstrated. I think this must have been a fairly new invention at that time. People were being asked for their opinion, and they mainly just shrugged their shoulders. The manufacturer was obviously very proud. I put my hand up, and said if my mum’s transistor radio had made that noise, I’d have gone out immediately and bought her a new one. I was just ignored on that occasion. Oddly enough, that was the last hi-fi show I visited. People are just so fixed in their opinion of what is good, and trying to reason with them just leads to undesirable consequences.