I never believed tobi was obito, vehemently argued against the possibility. Later, after some fun arguments i enjoyed entertaining its plausibility. Rereading kakashi gaiden opened my mind and showed me how far in advance kishi was carefully and deliberately setting up his teases even far beneath the obvious levels. Props to everyone who kept obito theories going. Likely will be izuna IM afraid. I was really hoping for a long time that UT would turn out to be the sage's older son, especially when "the human who knows everything " chapters were entitled "progenerator".

Fun times!