Try reading the log entries of the Lewis and Clark Corp. Meriwether Lewis must have sat staring out the window during those parts of his schooling and look how that turned out for him. Bad spelling did not keep them from their duty to record each day's entry.
You are quite correct about Lewis and Clark. A good book on spelling idiosyncrasies and variations is "Accomodating Brocolli in the Cemetary" (2004) by Vivian Cook, an Englishman. He devotes a whole page to Lewis and Clark. I find that my spelling is usually good, except that typing on a @##*$$$$!!! computer keyboard introduces spelling errors and trying to correct them on a computer adds even more errors. Put me down on the side of the Luddites.
Faiaoga, amateur knife enthusiast and professional bookworm
