That's why, randomly, you, sometimes make, strange errors. (Double space). And sometimes not. (Single space). And change keyboards, and Capitalize Improper Nouns. Etcetera.
That won't work if you use rather idiosyncratic vocabulary or grammar, such as Unabomber did; for example he wrote "clew" for "clue", and used lots of uncommon vocab, so it was easy to narrow him down to "Chicagoan, uni degree or higher".