Crossword Genius

Thoughts on lack of order in thearchy so unorthodox, nothing taken in (5,6)

Ross

I believe the answer is:

chaos theory

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'thoughts on lack of order' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'thearchy so unorthodox nothing taken in' is the wordplay.
'unorthodox' indicates anagramming the letters.
'nothing' becomes 'O' (O resembles 0).
'taken in' means one lot of letters goes inside another.
'thearchy'+'so'='thearchyso'
'thearchyso' anagrammed gives 'chastheory'.
'chastheory' placed around 'o' is 'CHAOS THEORY'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for chaos theory that I've seen before include "hypothesis on random events" , "In this small changes can have large consequences" .)

I've seen this clue in The Telegraph.
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