Hi,
When i was a boy i had a penguin science dictionary which used to talk about the theory of anti matter particles. These days they can make the stuff by the gram.
Maybe string theory will be the same, who knows.
As far as only beleiving things that you can see and touch, what does that actually mean. I can see and touch my telescope but in reality it is composed of atoms in various quantum states and my view of it is only correct on the macro level. There are many other levels at which one could describe the reality of my telescope.
The common sense view is unfortunately a human perceptional view and generally only has meaning in human terms, it's not much use when dealing with the micro.
Paul
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