, 6 tweets, 1 min read Read on Twitter
A rainbow is a three-way interaction among the sun, water droplets, and an observer.

A rainbow is a physical phenomenon, but not a physical object.

It has no specific location.

If you drive toward a rainbow, it appears to recede just as fast, so you can never get to it.
Rainbows are pretty fully understood, and guaranteed 100% metaphysics-free.

Although an observer is necessarily involved, a rainbow is not subjective.

It is not “mental,” not an illusion, and does not depend on any magical properties of brains.
The observer can just as well be a camera.

The rainbow is not in your head, or in the camera. But it is also not an object-out-there.

It is not in the mist, and not in the sun, although both are required for a rainbow to occur.
A rainbow is not “objective” in the sense of “inherent in an object.”

It is“objective” in a different sense: the presence of a rainbow is publicly verifiable.

Rational, unbiased observers will generally agree about whether or not there is a rainbow.
To make the analogy explicit, meanings:

are interactions among ppl & circumstances

have no definite locations (whether inside or outside heads or objects)

are observer-relative, to varying extents

mostly are publicly verifiable, so reasonable observers mostly agree about them
Rainbows once seemed magical, mysterious, and metaphysical.

Now we have a pretty good understanding of them.

Meanings may now seem magical, mysterious, or metaphysical.

They’re more complicated than rainbows—but hopefully we’ll gain a pretty good understanding of them too.
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