Based on T-Theory concepts of Terry Laundry.
From "A 1997 Introduction to T Theory" by Terrence Laundry:
'The Law of Matched Trend Time' basically states that duration over which investors can obtain 'superior equity returns' will always be equal to the previous time period in which returns were subnormal. A simpler way to put it is to say: the market can only 'make strong run' as long as it previously 'rested'.
As a result of this study... we run out of T...