Assumptions

3 cornerstones of technical analysis.

Market discounts everything
I tend to believe that market moves towards and away from temporary equilibriums where price has factored in everything. Meaning, market is not efficient all the time.

Price often moves in trends
My guess is trends happen because market participants are forced to chase higher prices (social pressure when everyone else is making) and liquidate lower prices (broker's call to force sell).

History tends to repeat itself
This one standard. Recurring patterns of human behaviours dont change much over time. We may live in a different time however our nature is not that different from a thousand years ago.