«As alluded to earlier when discussing the long - term upward drift in CAPE, another related but distinct headwind for contrarian stock market timing in the second half of our sample has been the decades - long valuation drift in post-World War II equity markets, over which the CAPE gradually doubled. (theirrelevantinvestor.com)
Professor Peter Abell, Emeritus Professor of Management at LSE and an author of the report, said: «Our interviews suggest that the high levels of pay that CEOs receive in non-financial firms is quite arbitrary and subject to ever upward drift. (sciencedaily.com)
There are probably dozens of ways to engineer a similar upward drift over a very limited period such as the 1960 - 1998 tuning of the models. (climateaudit.org)