Cities laid out experimentally, aiming for perfection (10)

I believe the answer is:

idealistic

I'm a little stuck... Click here to teach me more about this clue!

'experimentally aiming for perfection' is the definition.
I can't judge whether this defines the answer.

'cities laid out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'cities'+'laid'='citieslaid'
'citieslaid' anagrammed gives 'IDEALISTIC'.

Can you help me to learn more?

(Other definitions for idealistic that I've seen before include "Striving for perfection" , "Seeking the best" , "Naively impractical" , "Visionary" , "Impracticable" .)

I've seen this clue in The Irish Times.

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