the point of meditation is the clearing of the mind to attain a sort of ultra focus which is a + level of consciousness.
The Opposite is true for Khaotists because they attain a state of NO mind. A minus level of consciousness via over loading their brains(such as the classic matherian Death Stance). temporarily shorting themselves out, and flipping a circuit breaker with the laugh-banish. or something else which focuses the the mind away from the sigil.
The sigil is used similarly in both cases physically, but the mental objectives are polar opposites. One is focus on the meaning of the sigil through focus on the sigil's meaning and interpretations, like a reverse gnosis trance. throwing info and interpretations while blocking out everything until the meaning is all that exists. And is integrated into the meaning of all things, sorta like auto suggestion via persuasion. This is difficult due to the focus required.
The other way is focus on the sigil as mere symbol alone, letting the subconscious integrate the meaning into itself during the ritual, one way is basically thinking of everything else including the sigil till you get dizzy and faint. end it with a laugh to banish thoughts.
One is a lazer beam and the other an explosion.
Both ways are quite difficult because i am just making this stuff up.
True Khaotists are those who do what they like with magic in ways they like, ignoring, disregarding the things they don't. THey can be quite fickle as a result. MPD at work
