Market observers tend to use price action as a reference point to assess the likelihood of future movements.  So inevitably, the current regime will be compared to the exuberant period of December of 2017, when bitcoin prices peaked at around 20.000 in USD terms. And much is being said about market manipulation using the facilities of cryptocurrency in exchanges-- what is less evident, is the actual behavior of investors before a price movement occurs. What we learned after studying daily user activity at thousand of the services that crypto investors used, and the sources of information they were exposed to, during 2017 and 2018 is that there is a boundary after which prices become unpredictable.  And, wittingly or unwittingly, the operators of some of these services had the power to manipulate markets without even be present at the exchanges-- just by hacking attention.       
We begin by looking at user behavior at a mining pool with several million users, one of the largest players. Miners are key stakeholders in the crypto ecosystem (with an above average degree of sophistication among market participants), each click they make is a tell.