Humans have a strong desire to be part of a group. That desire makes us susceptible to fads, fashions, and idea contagions.

Humans have a strong desire to be part of a group. That desire makes us susceptible to fads, fashions, and idea contagions.

People are, by and large, quite poor at judging correct absolute values but are astute about determining relative values. Psychologists call this coherent arbitrariness, which suggests that individuals are coherent when they compare prices on a relative basis but arbitrary when those prices are considered versus fundamental value.

Edge also implies what Ben Graham....called a margin of safety. You have a margin of safety when you buy an asset at a price that is substantially less than its value. As Graham noted, the margin of safety 'is available for absorbing the effect of miscalculations or worse than average luck.' ...Graham expands, "The margin of safety is always dependent on the price paid. It will be large at one price, small at some higher price, nonexistent at some still higher price."

Onlookers frequently confuse edge with style...Edge means generating excess returns because of mispricing. Style suggests being in the right place at the right time. Sometimes edge and style overlap, sometimes they don't.

The plural on anecdote is not evidence

Emphasising what's in your control allows you to adopt an attitude of equanimity toward luck. You've done what you can, and from there you have to live with the results - good or bad