People glimpse fragments from the surrounding reality and then use their newly found understanding to gradually change it.
They do this in three, successive, steps.
The first has a lot to do with happenstance – the right man at the right place, the second involves a lot of ‘due diligence’ and the third depends very much on how those who end up in command of the new understating relate to the rest of the people.
Sometimes some of the people who ‘happen’ to ‘stumble’ on new information/experience something really new feel the urge to communicate to others what has happened to them.
Usually the information gleaned/sentiments experienced during this first step are so new that there are no socially sanctioned symbols that can represent them faithfully so the individual trying to communicate the entire experience has to find a novel way to make it understandable for those around him. This is art.
The second step has less to do with actual discovery and is more about systematization of information already at our disposal. Something like charting a newly discovered territory. Even if we have to adapt our existing tools to the new task – some of them had been discovered during the first step but that means they are already here when we start the second one, here the job to be done is more about reason than inspiration. This is science.
And now, that new information is available – even before it was widely disseminated – people start to use it. Some of it is used straight away/as it is/honestly while some other is used to keep ‘the others’ in the dark or to alter their perceptions in order to fit the goals of the ‘user’/’entrepreneur’/spin doctor.
Usually this last way of using newly found understanding has perverse consequences. The ‘user’ becomes arrogant and starts to believe he has somehow become a (demi)God while the people kept in the dark/unwittingly exploited sooner or later become aware of what is going on – and sometimes express that in artistic ways.
At some point the equilibrium is regained, either through  a  a series of oscillations that ’embrace’ it – a revolution – or through small steps in the right direction – evolution.
(Usually, as the distance between a given state of facts and the perceived point of equilibrium becomes wider then people gradually loose hope in evolution and start to consider more revolutionary methods.)