It's always remarkable how technical charting
with trend channels and lines shows you how
a commodity/stock/anything trades right to
a trendline and will either find support or break
through it. If you have the trendline pre-drawn,
based on the (in this case) upper trendline, which
is derived based on two known price points, you
can create the bottom line. Then you watch as
the item trades near the bottom line and can
'gamble' on whether to put in a buy order at,
or near, that point. Also you have an indication
of where to give up on your long and sell out if
you think the item will not find support at the
trendline, based upon how it is trading and your
intimate experience of watching the item trade
over a long time period. (Much like living with
another person! where you get to know its quirks)
