Frequently to both.
For fiction that I re-read and find it not as good the second time, I suspect the newness of it was the driving force in my initial assessment. Permutation City was life-changing for me, but going back after having more transhumanism in my diet, I don't know that it is even my favorite Greg Egan book.
There are other times where I have that feeling without even needing to re-read. "Upon reflection, I enjoyed that a lot at the time, but there is not a lot of there there."
You should be very surprised if you think you have found a new counterexample to a centuries-old discipline that comes from a millennia-old example. Odds are there is an existing literature addressing exactly that question.
I concur on "do what I want" as the distinction. Magic is teleological: it produces a certain effect, whereas science is about the cause. Magic "just works." You do not need to know how the magic words produce light or fire, they just do. The great usual magical dream is about having massive power under your control, not whether you are the direct cause. Wishes are the archetypal example. You wish for something and it happens. Done. A genie is neither you nor a tool you control, just a massive source of power bound to your wishes.
Magical horror stories are about wishing for effects and either not liking the cause or not specifying the effect properly, like the evil genie or the monkey's paw. Science horror stories are about starting a cause without realizing its effects.
There are plenty of science-like magical stories, where they delve into the rules of magic and effects from causes. And don't those read a lot more like science fiction, whereas a space opera like Star Wars has the trappings of science fiction but Jedi are just space wizards that produce effects by willing them.
And the direction of the error was known and stated in advance by informed interpreters (538). A fair number of Trump voters would not have been considered "likely" voters based on past non-voting, and that was a systematic bias in the polling estimate rather than something that would affect a few states independently. Pollsters tended to stick with their "likely" filter rather than change it on the assumption that these voters would turn out and vote. They turned out and voted.
I seem to recall seeing Trump doing better in polls of registered voters versus likely voters, but I cannot say I have strong evidence for that and it might have just been comparing a few surveys. Most polls seem to have been of likely voters.
Between Halls B and E, nearish giant Pikachu
Setting up at the blue Fantasy Flight tables, by the X-Wing Miniatures banner, in front of the HQ table, just before the banner showing the switch to Asmodee.
If you have spotted a good/better location at the con, suggestions are still open. Otherwise, I will be updating on-site when I arrive on Saturday.
Default location is in the card game area, specific location to be found at the time (and then posted here). There are always open tables. I would plan on near-ish the exhibit hall exit, but I have not seen how the layout may have changed this year.
There is also the official open gaming space, but that is $4/person.
We could also take discussion to a restaurant, or start at the Convention Center and wander off for food if we run that long.
There is some small number of people whom I trust when they say they very confident. They can explain the reasons why they came to a belief and the counterarguments. Most other highly confident statements I look upon with suspicion, and I might even take the confidence as evidence against the claim. Many very confident people seem unaware of counterarguments, are entirely dismissive of them, or wear as a badge of pride that they have explicitly refused to consider them.
There are others whose intuition I will trust with high confidence on certain topics, significantly because they are aware that they are exercising intuition. They may not know how they know something, but at least they know they don't know how they know it, which tends to get them to the right confidence level.
And then I scroll down and find this, the perfect example of your question about books that can be initially amazing but not great upon re-read or reflection. If you are not familiar with the ideas in GEB, it can be an amazing introduction that opens new horizons. Or it can be too clever for its own good, getting in the way of delivering its own content.