I am not possibly sure about whether others have experienced or experience the same, but I am having a problem with spelling. Mind you, I am not devolving, but while writing on paper I find a few words elusive. I am unsure as to whether I wrote them right, which online is instantly signaled by spell checkers, both on MS Word and enabled on blog posts and comment boxes. Convenient if in a hurry, but it might make your brain a lazy slacker. I know my brain has.
While Machiavellian, Renaissance & Milwaukee might be tough ones to nail sometimes [I am typing super fast, so I usually eat a letter or two], I suggest you learn from my fail and not rely entirely on the spell checker and write by hand often. I also admit that for me spelling is something that may creep on me at any time, because I am not a native speaker. Not enough usage of all the vocabulary I know [I possess eloquence, when required] can cause for some serious bloopers.
Similar sounding words [It's a lot more logical to say "Does this look good on my waist" and not use the word 'waste'] are always silent killers of your dignity, when you least expect. Also the exposure to both US & UK spelling has muddled things a bit with me. Not that I am complaining much. I studied the UK spelling and then converted to the American manner. I think I studied the differences and remembered them for awhile. Right now, however, I am stretched between the two countries and content written according to both sets of rules and the color or colour debate starts right up again.
Peculiar what a few observations can bring you to contemplate about.
Subliminal message: Beware of the Spell Checker. :P