Observer recalled accommodating fools with second and further estimates (10)

'further estimates' is the definition.
The definition and answer can be both related to thinking as well as being verbs in their -s form.
Perhaps there's an association between them I don't understand?

'observer recalled accommodating fools with second' is the wordplay.
'observer' becomes 'seer' (one who observes or sees).
'recalled' shows that the letters should be reversed in order (to recall can mean to bring something back).
'accommodating' means one lot of letters goes inside another.
'fools with' becomes 'asses' (ass can mean a foolish person. I am not sure about the 'with' bit.).
'second' becomes 's' (common abbreviation).
'seer' backwards is 'rees'.
'asses'+'s'='assess'
'rees' placed around 'assess' is 'REASSESSES'.

'and' is the link.

Can you help me to learn more?