HSP. charts tell you part of the story, not all of it, and can...

HSP. charts tell you part of the story, not all of it, and can be very misleading. Just the other day, I posted on the XJO thread, how all the major world indices were showing signs of going up, since their 50 and 100 day ma were either about to cross or had just crossed. Since then its been one way traffic...down, by almost 8%.
I like charts aswell, but I retain a healthy air of scepticism towards them in regards to guiding my final decision as to whether to buy or sell.