Tore, I'm with you on the parsimony, especially being a biologist myself. However, I don't like to be trapped by it. I use it appropriately when thinking about designing a very specific experiment, but I have a firm belief that sometimes wild leaps need to be made to make real discoveries. Being very parsimonious gets you the tiny details, like which protein out of millions of proteins belong to which intracellular compartment, but that is about as far as it goes. For example, when Fleming discovered penicillin, he did so knowing full well most of the scientists in the world thought he was nuts.
Basically I guess I'm saying stay logical, but keep an open mind. It is one thing to believe the hypothesis with the least assumptions and another to flat out deny the other possibilities. When that happens, it is harder recognize evidence that proves the wilder theory even if it shows up. At this point, I like to give our ancient ancestors credit for their accomplishments. They built the pyramids. They were bored and came up with fantasy creatures and stories to go with them. But who knows, maybe it was all aliens...
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Confusion will be my epitaph...
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