Wumpus,
Basically you are right. I was glossing over some issues to shorten an overlong post. There are assumptions in doing science, but these assumptions are so basic to our nature, that they are only questioned by the most painstaking philosophers.
The first assumption: Phenomena exist. I use the word phenomena in a Knatian sense, to mean sense impressions. That renders unneccessary all talk of the “real world,” whatever that is. Science, and everyday life deal with the impressions that our senses absorb as if they are real, and why shouldn’t they? I mean you don’t walk in front of trucks or jump off buildings on the off chance that trucks do not exist or plummeting does not occur. Similarly, science is perfectly justified in assuming the existence of phenomena.
2: Phenomena are common. A bit trickier, but again we seem to use the same words for the same things. The sky is blue, fur is soft etc. even when interpretations of phenomena differ, as in, say, color blindness, explanations for the differences occur.
3: Phenomena are regular. That is the same set of events will lead to the same results. If I put a pot of water over fire, it will boil, eventually. If I have a given conserved quantity in an isolated system, the quantity will remain constant. Again, this is an assumption, but it is fundamental in our experience. We do not see cats suddenly become rabbits, Or galaxies suddenly start flapping their arms like cheerleaders. Even religious people, who take on faith that the miracles of the Bible are true, admit that these miracles are rare events with supernatural causes.
3’: the laws of science are the same as they always were. This allows us to discuss the big bang, the origin of the solar system, and the evolution of life on earth. This being the land of the free, one may doubt this, and many creationists fall back on this doubt when other weapons fail. But if you do doubt this, you are in danger of falling into a radical meaningless skepticism. As Bertrand Russell put it, "How do you know that the earth wasn’t created 5 minutes ago, along with all your memories of the past. I think I will maintain my beliefs.
Lbertarian,
I think we may be equivocating. I am using the word “science” to talk about the process of theory formation from empirical data I described above. (As Humpty Dumpty said, "When I use a word it means what I want it to mean, Niether more nor less.) Looked at in this light, math is not a science, as it does not rely on empirical data, does not form theories, and relies on a set of arbitrary assumptions and the laws of logic for its development. Euclidiean geometry is as valid now as it was 2500 years ago. Non-Euclidean geometry did not displace it, it merely showed that one of the assumptions of Euclid (the parallel postulate) was arbitrary, which was borne out by the impossibility of its proof. On the other hand, Even recent scientific theories are cast aside when better explanations arise. Who remembers phlogiston, Lamarkianism, or the Ether?
Edwino,
Please do not abandon this discussion merely because you “lack background.” I’m not a professional philosopher. I would be interested in what you, as a “specimen scientist” have to say. If there is any term I’m using that you don’t get, it is probably more to do with my clumsy usage than with any lack of knowledge or training on your part, so please ask me to clarify.
I am not quite certain what you are getting at with your “n=1” argument. I assume you are talking about probability, but I don’t know what the numbers refer to in your discussion of disease. Please explain further, if you have the time. Are you saying that belief in God is strengthened by improbable occurences? I don’t want to reply unless I am confident I understand your argument.
JM mullaney,
I’m afraid I don’t find your argument about angels convincing. Isn’t it possible that God sent angels to some people and not others? Calvin proposed the cruel argument that God arbitrarily picks out the individuals to be saved. On a gentler note, some Buddhists (I think; Buddhist posters, please correct me if I’m wrong) believe that salvation (enlightenment) is a goal we must work for, rather than a free gift from God. Of course the wheel of Karma gives us an infinite number of lifetimes to achieve this goal. Even some early christians believed that suffering and prayer were pre-requisits for salvation.