Bitcoin is speculative guess at best, since there is nothing backing it up.
The reasong why its so volatile, and currently experiencing another dip, is by my opinion mass of investors that went in on bitcoin expecting very fast progress that didn't happen, and they are currently leaving the market, worrying that they will have further losses.
Sure you can depending on where your trading and give a good indication on where things are at currently and seeing some big dips and if you follow all the new around Bitcoin you will find your answers within news and current trades going on all over the place. Theirs some big ish walls to get past $590 area however I see a down trend and it will continue unless some big players decided on hopping on having said that dell now accept Bitcoin but they not really doing that much in terms of buying selling or people buying their products.