All the writing samples that are verifiably from the pen of Soetoro (i.e., not written by Bill Ayers) have one thing in common:
He CANNOT get nouns and verbs to agree in number.
A sure sign of average IQ, at best.
‘average IQ, at best.’
All indicators taken together, the operative words are “at best.” Odds are very good to excellent that Obama’s IQ is slightly-to-somewhat below average.