It is unquestionable:  The block halving event will cause major disruption and volatility within the bitcoin markets; and mining atmosphere. There is no question about it.  Fear/Panic will likely take hold months before. After any sort of major price drop or difficulty drop - greed will then settle in - and then a tug of war between both.

This will not all happen in 67 weeks... it will begin long before. It's not a secret, so the effect the halving has will be factored into the event's repercussions long in advance.

Strato