Yes i know. Chaimfan, I was taught that the Prophet married Aisha primarily for three reasons:
a. To reinforce the friendly relations already existing with Abu Bakr (his closest companion).
b. To educate and train Aisha for the purposes of Islam.
c. To utilise her capabilities for the sake of Islam.
Her Marriage with the prophet was a Wahy (Divine Revelation). She, herself relates from the Prophet. "He said, 'I saw you in dreams three times. The angel brought you to me and you were clad in white silk. He (the angel) said that it was your consort and he (angel) showed me by opening your face. You are just like that..." Sahih Muslim, Vol.2, p. 285.
and that because aisha was clever and had a brilliant memory she narrated 200 hadiths, thats why the prophet had perceived to marry her beforehand as he knew of her future good doings.
I am not basing this as an arguement on my behalf, merely repeating what i was told.