Can we ignore the bad historical examples? Lets ignore the 19th century example, which is about a written document rather than observable evidence. Lets also ignore the “Earth being flat” example (which anybody watching a ship depart from a port could refute, so nobody believed it in the 15th century) or “the Earth doesn’t attract things” (which anybody can throw an object and refute). Oops, this doesn’t leave us with much.
OK, the main point of the meme is that a single snowflake doesn’t falsify global warming. That is true, the weather is a chaotic, unpredictable system. But it ignores some valid criticism:
- Scientific theories are, by definition, falsifiable. Under what criteria would global warming be falsified?
- If a single snowflake or a single cold winter does not constitute evidence against global warming, then a single hot summer does not constitute evidence for it.
h/t Joel C. Salomon