Ive noticed at a couple hackathons that Ive been to(including Disrupt and AngelHack) that a number of teams came with projects that were either already prepare

Ive noticed at a couple hackathons that Ive been to(including Disrupt and AngelHack) that a number of teams came with projects that were either already prepared and they just added a feature on top of them or they were already half-done and were completed at the hackathon. Furthermore ive seen people communicate with remote teams at Hackathon. Both of these I see as sort of cheating, not unlike doping in sports, since idea of the Hackathon is to show what can be done in 10-20 hours of hacking.