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you are right. a triangle can also be the B wave of a correction. But Haejin's leading diagonal for BTC says a diffrent story. H&S even if it's complete has allready changed the trend. So we need something to change the trend now back to bullish.

also :
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Since ICO's took off at the end of 2017 and crypto has gone mainstream perhaps we're in a slightly different boat this go round.