so-called folk beliefs were all originally selected and filtered from people's experiences. Some stem from a principle of analogy. For instance, since turtles have lower pulse and breathing rates than humans--and in fact some chelonians do live longer than most people--there arose a belief in the immortality of turtles. And so it has happened that folk beliefs differ from today's scientific understanding of turtles.
所謂民俗信仰，本來就是經過人們的經驗選擇、過濾，其中也有類比原則，例如發現烏龜心臟跳動比人慢，呼吸次數比人少，確實又有些烏龜活得比人長壽，因此出現烏龜可以祈壽的信仰，如此民俗信仰就和今天實際生物的生態有了出入。