Hi there Vanessa,
Vanessa writes:
Like saying new computer programs are developed by random mutation in the computer code of existing programs - like saying my media player will one day evolve into publishing program simply by me using it.
Well, not like that really, no. We observe that genetic mutations occur in reproduction of life. (My dad was a veterinary surgeon, and once put down a kitten that was born with two heads. Sad, but very much observed). We do not observe that computer programs reproduce and occasionally mutate in so doing.
Vanessa writes:
I claim 'certainty is the enemy of science'.
Interestingly, RAZD was arguing precisely that science is not certain - we observe, predict, and then either discard a theory, or determine that it seems to represent the best explanation available to us of the phenomena which we observe. As I understand it, scientists are not certain - they are sufficiently convinced to move scientific enquiry and advances in technology forward, but they are always open to improving their understanding.
Vanessa writes:
We should not be content to accept a collection of theories to explain the evolution of the solar system, another for the beginnings of life on Earth and yet another for evolution of life.
Well, there are obviously efforts ongoing to identify a unified grand theory which would unite quantum and Newtonian physics (I really hope I got that right - apologies to the scientists if I didn't), but in broad terms, science in its widest sense will always be a patchwork - the explanations of how a cell functions; of how electrons (sort of) orbit an atom's nucleus; of how gravity bends light; of how plate tectonics create earthquakes, will all be different from each other. Connected, yes, at a very deep and complex level, but still resembling a patchwork. There is nothing which says that a single, smooth, unified theory of all of existence should look neat and shiny - it could well look like a poor patchwork quilt of life.
Vanessa writes:
I am much more interested in finding the truth.
I think that a lot of people try to get away from the word "truth", because it always sounds like it is spelled with a capital "T". From reading the posts of most of the scientists on here, they seem to be interested in finding out the answers to "what", "how", "when", "how much" and similar questions. It is a matter of trying to understand what is, rather than trying to determine an ultimate reason for everything. It's a subtle distinction, but looking for "the truth" suggests too many preconceptions - let's just find out what is.