It is available here.
I will go through the main points and translate them into normalspeak.
First tip:
“Nighttime is good for ghost-hunting because the absence of noise, people, and other distractions of the day helps your sixth sense stay in tune with your environment.”
-Garrett Moffett, tour guide and author
If you are reading this, your ancestors were good at Hearing Things Go Bump In The Night. Earlier in human history, it was better in terms of survival and reproduction that someone be more sensitive to sensory input than to be indifferent. Those hominids were better at hunting prey and escaping predators, and they were able to pass on their genes more successfully than others. There was no evolutionary consequence for overreacting to a faint noise or something in one’s peripheral vision, but failing to react to such stimuli could have life or death consequences. Because our species has lived for so long as basically nomadic hunters and gatherers in the wild, there is an asymmetry in our psychological evolution where instant fear pays off in the historically wider sense where critical inquiry does not.