I don’t recall fixation error in the sequences, but something like it shows up in HPMOR, occurring in http://hpmor.com/chapter/67 and discussed in http://hpmor.com/chapter/68:
“But you, Miss Granger, had the misfortune to remember how to cast the Stunning Hex, and so you did not search your excellent memory for a dozen easier spells that might have proved efficacious.”
I don’t recall fixation error in the sequences, but something like it shows up in HPMOR, occurring in http://hpmor.com/chapter/67 and discussed in http://hpmor.com/chapter/68:
“But you, Miss Granger, had the misfortune to remember how to cast the Stunning Hex, and so you did not search your excellent memory for a dozen easier spells that might have proved efficacious.”