In Starfire, Mick Staley attempts to distinguish Thelema from Crowleyanity. The core of this something, I suggest, is the Will. Furthermore, perhaps as a result of the practice Chaos magick, the idea of Chaos is slowly entering the popular imagination via science. However, it is now grudgingly admitted that this would require a precision of measurement which it is impossible to achieve. Engineers have long since had to accept this uncertainty - that all measurement is limited by the accuracy of the measuring device.
Absolute precision is an impossible goal.
To the extent that Chaos is a form of magick, ie. The idea which this is based on tends to be that of the hermit, the forest sage of Hinduism, the solitary adept of High Magick. No doubt if it was possible in this present age, one could experience such an existence if one could remove the self from the rest of human existence. But such a model is no longer valid, since the growth of human consciousness is such that there is no virgin wilderness left in which to undertake such a quest. We are forced to contend with the results of the human desire for knowledge, power, control and security.