But the world isn't black and white. It's gray scale. As an inventor, you have to see things in gray scale.

, 15, 2012-09-12, /1350 /1351 /1352 /1353 /1354 /1355 /1356 /1357 /1358 /1359 /1360 /1361 /1362 /1363 /1364
Image cached from https://m.media-amazon.com/images/I/51zrvi6s2PL._SY445_SX342_.jpg