thoughts don't behave much like perceptions at all
Can you expand on what you mean by that? There are many ways in which thoughts behave quite a bit like perceptions, which is unsurprising since they are both examples of operations clusters of neurons can perform, which is a relatively narrow class of operations. Video games behave quite a bit like spreadsheets in a similar way.
Of course, there are also many ways in which video games behave nothing at all like spreadsheets, and thoughts behave nothing like perceptions.
Naively speaking, if Alice can think a thought, she can just tell Bob, and he will. Dogs can't tell us what ultrasounds sound like, but that's for the same reason they can't tell us what regular sounds sound like.
Here's the new thread for posting quotes, with the usual rules: