Or a d6 with the 4, 5 and 6 faces blank. When you roll, if the face isn't blank, that's your number. If it is then flip the die over and subtract that number from 7.
The author believes that rejecting candidates that fail in these ways will lead to hiring better employees, but I see nothing to say why that should be so.
> remember we're 2 years away from self driving car since 2010
Depending on how you define that milestone, we are already there. There are multiple companies offering self-driving cars to the public in multiple cities.
Can you though?