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<p>[QUOTE=&quot;Pavlos, post: 3359734, member: 96635&quot;]I respect your answer a lot, but when you say my words are not true, a support of your answer would be appreciated.</p><p><br /></p><p>I am not aware of a measurement that can validate if a coin is ancient or modern. Proven with what method? On base of an eye? An eye is not validation, if I see the color green, then how do I know you see the same? It needs to be validated by using colorimetry or photometry for example. That is why, nobody can say &quot;the earth is round, because I see it like that from space&quot;. There need to be measurements performed to validate it is indeed round, because otherwise it would still stay a personal opinion.</p><p><br /></p><p>On the end an expert sees a repetition of observations and uses that knowledge for to detect future cases. It is a like a doctor who says, on the base of your symptoms it looks like you have anemia (an expert opinion). Then, by testing the blood with measurements like complete blood count, it is validated that there is indeed a case of anemia. </p><p><br /></p><p>I don&#039;t know if I think this way because I am a scientist. However, if I would go to my boss and I say, I have created this new plastic and it can hold the weight of a Boeing 747, he would laugh at me and say, please make atleast two independent samples, where you perform atleast five measurements each and I want to see the same number where it says it can hold 350 tons.</p><p><br /></p><p>Thank you for your time.[/QUOTE]</p><p><br /></p>

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