.ecitoN ehT htfif edarg si gnitisiv eht ooz no lirpA 4. A tnerap ro lagel naidraug tsum ngis eht noissimrep pils rof ruoy dlihc ot dnetta eht pirt ot eht ooz. rouY dlihc sdeen ot gnirb a kcas hcnul dna a thgil noonretfa kcans.
You probably cannot not read this paragraph without great difficulty. You may see a number (4) - or a repeated letter (a) - or some word patterns (ooz or eht).
Think about having to navigate your day when you could not read the signs around you,the materials you work with -- or in this example a notice from your childʼs school informing parents of a field trip to the zoo.