Jargon is at times the peddling of subtlety in place of art because modern authors have nothing to say.
Jargon is a necessity in the advanced skill of philosophizing just as a complex and laborious program of learning and practice is necessary for competence in shoe making. Though not everyone is able to make shoes, why when it comes to philosophy, should one immediately be able to philosophize'.
Jargon is a presentation of ideas that is difficult in direct proportion to how things are in reality in fact difficult. Lacan is not looking for transparency, but trying, first of all, to stick to what we find in our experience, and if it's not transparent, well that's too bad.
Jargon is a character of certain literary styles which sometimes allow us to think what the philosophical theory of writing sometimes misapprehends, what it sometimes violently prohibits.
Jargon is language constructed in such a way to make it as hard as possible to reinsert technocratic biases back into philosophy.
Jargon is a technical language which the phenomenologist is left to develop. It is a 'nonworldly language', still opaque to the natural attitude.
Jargon is an activity whereby clarity in achieve precisely by not trying to be so clear. The reason for this is that examples distract the attention, dissipate the mental power of the reader, and stand in the way of his forming a clear conception of the whole.
Jargon is like in that joke where the old man went to a talk. When he came home, is son asked, 'what did the man say'' The old man replied, 'he didn't say'.