You will be amazed how you can read the text below even though the letters are reversed.
The text itself explains why we can do this.
Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn’t mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.
There's even a step up, if you can also read the following text, then your brain is really fit.
THI5 M3554GE 5HOWS YOU,
WH4T GR34T ACH13V3M3NT5 OUR 8R41N 15 C4P48L3 OF!
4T TH3 83G1NN1NG, 1T W1LL C3RT41NLY 5T1LL 83 D1FF1CULT TO R34D TH15,
8UT 8Y NOW YOU C4N PRO848LY R34D TH15 QU1T3 W3LL,
W1THOUT R34LLY STR41N1NG YOUR53LF.
OUR 8R41N 4CH13V35 TH15 W1TH A H1GH L34RN1NG C4P4C1TY.
1MPR3551V3, 15N´T 1T? F33L FR33 TO 5H4R3 TH15 1F YOU W4NT TO 1N5P1R3 OTH3R5 W1TH 1T.
1 = I 3= E 4 = A 5 = S 8 = B