"Ths sntnc s mssng ts vwls." You likely figured out the words — "this sentence is missing its vowels" — even though they're lacking several letters of the alphabet. But how can you understand words ...

If you spend enough time online, you're bound to come come across a sentence like this: "Yr brn cn rd wrds wtht vwls." It looks like nonsense at first glance, but after a moment, you probably read it ...