Thanks (examples)

Thanks for the great responses to my questions. I have read all of Adams books (including his autobiography) but it was so long ago that I had forgotten the definitions. I guess coming from a pure science background I get frustrated when I don't have exact, statistically significant data to help me understand but I guess that's the nature of the beast in photography. There seems to be no alternative but to experiment myself, which I find extrememly tedious. I like the ISO definition because it gives me a better known starting point. I am still a little unsure of the usage of the word 'speed' though, as in a previous posting someone described the use of a certain dilution of developer as giving 'good speed' to the film. I have also seen it used to describe paper and paper developer. Thanks again.

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