by "others"? absolutely not.
in 99% of the cases that i have seen those who are doing technical analysis know any more than a 6 year old drawing on the charts. sometimes it is so bad that the lines they draw is completely random because they wanted to make a conclusion (eg. say a certain higher or lower price is possible) then they drew the line so that it passes their desired price!
apart from that TA is not completely reliable itself either. that is why many experts refer to it as "Pseudoscience" and don't believe in it at all.