Originally posted by: mugs
Originally posted by: Vic
Pardon me... allow me to rephrase: an equation with no definable or measurable variables is not valid.
Do you feel better now? It doesn't change the issue that the Drake Equation is meaningless sh!t, or that aliens are the gods of pseudoscience.
*sigh*... the equation is valid... Look at the meanings of the inputs and look at the meaning of the output. The left side equals the right side. The Drake Equation doesn't attempt to make any claims about what does or does not exist in the universe. It tells us what is likely given certain probabilities and averages. If those probabilities and averages were accurate, the result would be accurate.
It is no different from the parallelogram - I could put whatever BS I want in for the length and height and get an arbitrary area. Or I can put in actual measured values and get the actual area. Same thing with the Drake Equation. The problem is that we can't yet obtain accurate, measurable values, and in order to obtain them we'd have already had to make contact with other intelligent life. That doesn't make the equation any less valid mathematically though.