" ...it is often likened to the law of inertia; that an object in motion will continue in motion in the same direction, until it meets an opposing force. In human terms, an investor will tend to resist paying more for a stock than the price other people have recently been paying for it - unless it continues moving up, which will give him some confidence or hope that it will keep going up."
William L. Jiler
How Charts Can Help
You in the Stock Market
"Trendlines obtain their significance from three factors: length, number of times touched or approached, and angle of ascent or descent."
Martin Pring
Introduction to
Technical Analysis