What's wrong with the need for falsifiability? If seeing is the same as believing, Biggie Smalls still lives, 'cause I saw him in my dream once...
In some sense, Biggie Smalls DOES still live because you saw him. That might sound like poetry, but perhaps these types of experiences with the dead, especially ones that seem even less "dreamy" and more autonomous, are considered by people as evidence supporting afterlife theories.
After all, in talking of "science" we have to distinguish between the method and the body of knowledge. The body of knowledge will probably be considered mostly wrong 1000 years in the future - we are looking at models and metaphors that help us in our current situation. The current collection of scientific metaphors will become as outdated as the body of religious knowledge seems to many people now - including some theories regarding contact with Notorious from the "other side."
Regarding the method of science, it DOES equate to repeated perception (i.e., observation). That is why many people have gotten different results in experiments that seem to be physical and objective. At the end of the day, we are using our nervous systems to make observations and establish "natural laws" based on things that happen again and again.
Do you trust human experience to be the sole arbiter of truth? How do you explain psychosis - are delusive beliefs 'true' if they are held strongly enough?
Yes. There is no Truth outside consensual norms. As RAW said: "Reality is what you can get away with."
Consider currency: the fact that a piece of useless paper is subjectively "worth" more than a large hunk of delicious cheese says a lot of about our conditioning with mass delusion. Consider the statement that the universe is finite but unbounded - these are counter-intuitive, irrational (read "delusional") takes on physical reality, supported by cultural conditioning from the masses.
I think the scientific method is pretty much the best method we have for sorting out "perceptual noise" from reproducible effects... Formulating a hypothesis, testing it, and evaluating the results objectively is key to optimizing results... Science is not just the observation of what already exists, it is a method of discovering new things, and being sure that our models work in given scenarios, rather than having high hopes... I have trouble accepting the existence of certain things except in their use as social constructs. Ghosts, the afterlife, heaven, aliens
I agree with your statement about the scientific method. That method, however, needs to apply to all phenomena in order to accurately notice any patterns that might be detrimental or useful. In other words, experiences with psi, or with entities such as spirits or aliens, can and should be taken into account with similar rigor as other pieces of data.
We might say we are doing a good job at "sorting out perceptual noise," but so long as many people are consistently experiencing these strange phenomena, are scientists justified in either ignoring these specific types of observations in favor of more acceptable ones, or working with automatic assumptions that certain types of observations are delusional?
The fact that mental illnesses are becoming more prevalent seems to me evidence that our scientific method is not being used as usefully or honestly as it could be. Many people are experiencing things that the scientific community is conditioned into thinking are not worthy of proper unbiased attention with the scientific method.