also i double clicked the upgrade menu and now i'm a tardis... doing that can result in quite different results i did it once and then i got 50k xp from the think button did it again and the think button gave 24 xp, doing it again resulted in a slideshow of random pictures.
the think button should give 1 xp per click and a thinkershould give 0.25 xp per second then the upgrades (with descriptions) would add multipliers to the base "thinking" (such as x2, x4, x12, x9001 ecc...) and that's for the balancing. For the rest, the game screen should be 140% the size it is now and the upgrade and achievement menu... well you know. also i experienced a bug that happens after you play the game a bit: the game restarts and goes back to the main menu but when you play again the think button gives 10 xp per click instead of 1 xp every 2 clicks, quite the game breaker.
i finished the game and well the ending was a bit disappointing... i wish the ending was the spaceship going so fast to rip the space-time barrier and go back in time (and restart the whole game), that would've been cool