

I disagree, runbacks are as much difficulty as having to recover your currency after death, or even having to recover your items after dying in Minecraft. It’s a punishment for dying, and a way to make you treat it seriously.
It can incentivise the wrong things, punish experimentation and make players stick with what they know, even if better options exist. You’re free to dislike it, and it has downsides, but dismissing it as “not difficulty” is just dishonest.
That actually sounds like a fun SCP - a word that doesn’t seem to contain a letter, but when testing for the presence of that letter using an algorithm that exclusively checks for that presence, it reports the letter is indeed present. Any attempt to check where in the word the letter is, or to get a list of all letters in that word, spuriously fail. Containment could be fun, probably involving amnestics and widespread societal influence, I also wonder if they could create an algorithm for checking letter presence that can be performed by hand without leaking any other information to the person performing it, reproducing the anomaly without computers.