the fayth is actually a person whom is died on the pilgrimage...they are summoner too...there's a lot of summoner if u remember...each of the summoner has their own team (summoner and guardian)...they never follow other team (other summoner)...but they only have one mission that is to bring sin down...the fayth(died summoner) always wanted a calm spira...they never give up...which is a reason why they transform to become an aeon and the dreams too...they never stop dreaming UNTIL sin is gone forever...you can see it actually...when jecht together with auron and lord braska manage to stop sin for the coming 10 years...zanarkand(in fayth dream) reach the calm too...it just last for 10 years which is enough for tidus to grow up...after that (10 years after lord braska defeat sin) sin came once again and this time sin take tidus with him too (at zanarkand, when tidus is perfoming the sphere shot)...this actually is not what the fayth is dreaming...it actually came from the sin itself...yes sir jecht did this all...the reason is because he wants to see his own kid (tidus) and he want his own kid to kill him...thats why the other citizens of zanarkand didn't travel to baaj temple and to besaid...got the point!...tidus is the only person who travel from zanarkand(the dream of the fayth) to the real world(baaj temple>he meet rikku>besaid island)...this all is done by sir jecht...he's the only one who can did this because he use to experiences the same thing...i noticed this after i finished the game...the dream of the fayth is mainly about jecht...jecht is the only person who travel from the fayth dream to the real world 100% with just using the power of the dream...even tidus travel like that too...but with jecht help (just like i said jecht wanted to see tidus and wanted tidus to stop him from being a complete sin)...in a nutshell...tidus is not the real hero...the real hero should be sir jecht...if there's no sir jecht...automaticly no tidus too...yes sir jecht is the real hero...anyway i still prefer tidus...