Sentence:  Those modern scholars who urge that we must keep in mind the fundamental continuity of Aegean development from earliest times - granted occasional irruptions of peoples and ideas from outside - are correct ; but all too <WSD>many</WSD> observers have been misled by this fact into minimizing the degree of change which took place in the early first millennium . 
Meaning of the word marked with <WSD> tags:  a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number