Actually, guest, we surely generally accept that dreams are not real. But for your information the cars in my dreams are not usually blue, nor have wire wheels. One or two are Bentley Racing Green (usually inaccurately called British Racing Green which is a light green like Connaught used to race in), but red also pops up. One is rather like the V8 interceptor in Mad Max 1, with the raised GMC supercharger.

So, LH, the fact that a few people see something is not evidence, and neither is the fact that a lot of people see it isn't there? "As I was going down the stair, I met a man who wasn't there. He wasn't there again today, I wish that he would go away". I'm a practical sort of bloke (for a lawyer) and this is getting too philosphical for me. Show me one, and I'll ask if I am hallucinating and depending on my answer to myself believe in it. Show me an experiment that demonstrates the existence of one, with repeatable concrete evidence and I'll believe in one.

Even give me a good reason to believe in one and I'll be prepared to concede that it might exist.

But don't pretend that believing in something the inertial observer can neither see feel not measure is logical and then criticise others for being illogical.