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All Is Well

Posted by | Posted in Gym, Personal Shizzle | Posted on 27-03-2009

Well, my Dad has his operation yesterday and it went swimmingly. I got a half drugged-up phonecall from him yesterday as he was coming out of the hospital to let me know that everything went well, so that’s a relief.

I’ve got a bit of an eventful weekend planned this weekend. It was a friend’s birthday yesterday, so to celebrate we’ll be going out for a meal and a few drinks on Saturday. It does mean that I have to travel the length of the country to get to their neck of the woods, and they want me to go up straight after work tonight, so that’ll be a bit of a mission. It also means I’ll be missing gym time!

These days, I not only feel guilty about missing gym time (if I ever do) but I actually don’t like to miss any. Whereas before (and I guess a lot of people are like this) I felt guilty simply because I knew I should have gone, nowadays I actually want to go because I enjoy it, and so by missing a day it turns me into Angry Dad.

Having been payday this week, I think I’m going to look into buying the Nikon D40 camera. There’s no real rush to buy it, although I do think I should get it and have a little play around with it before going to the US with it. Thanks to the wonders of the internet, I can become a near-expert on cameras before I leave, so hopefully the pictars I take while I’m there won’t be too shoddy.

Here’s a question that’s been bugging me for ages – how do opticians know which colours colour-blind people can’t see? Perhaps they dont; perhaps they simply say that you can’t distinguish between two colours, such as red and green. But I’m pretty sure an optician could tell you which of the colours it is that you’re not seeing properly, and it baffles me as to how they do it.

It’s easy to find out if someone can’t tell the difference between certain shades of¬† red and green – you simply have a coloured card with both red and green on it, and if they can’t see a difference, then it’s clear that they can’t distinguish between the two colours. However, how would you determine whether it’s the red that they can’t see (because they see it as green) or if it was the green that they can’t see (because they see it as red)? Perhaps they can’t see either colour correctly, and both colours may appear grey, for example, as is the case with an uncle of mine.

In his case, he sees certain shades of red and green as grey, but my question was, how do they know that it’s grey that he sees? If red, green, and grey all appear to be the same to him, how do they know that he sees all three shades as grey, and not green or red? That leads onto another question – how do any of us know that the colours we see are the same as the colours that other people see?

To explain, imagine you’re looking at a shampoo bottle (I chose that because the question popped into my head while I was sat in the bath). Now, that shampoo bottle is green, and so if anyone asked me, I’d tell them it was green. If someone else saw the same bottle, they too would call it green, because they’ve been taught (the same as I have) that the colour they see there is called ‘green’. However, if I looked at the bottle through their eyes, how do I know that the colour they see is the same as what Iwould¬† see when I looked through my own eyes, and not, for example, a different colour, such as blue? To them, they would see that particular colour and call it green every time, but if I saw the same colour, I might call it blue.

Perhaps there’s no way to know if people see the same thing as the same colour. In a way I suppose it doesn’t matter. If everyone looks at the colour and call it the same thing, then I guess it doesn’t matter how they actually see that colour, even if they all see it slightly differently compared to each other.

It’s a strange question for a Friday morning, I grant you, but it’s something that popped into my head and won’t seem to go away.

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