Why does heat content increase in a cycle if heat equals work?

[firecool]

at 3:30 he introduces heat content to show why it can't be a state variable. he says that if q=2 is added to the cycle everytime you go around the cycle the heat content would be incremented by 2. but as heat=work shouldn't that extra 2 be lost as work and at point 1 you always have hc=5? watch the video to make sense of my question.. :)

 

[Neandethal00]

at 3:30 he introduces heat content to show why it can't be a state variable. he says that if q=2 is added to the cycle everytime you go around the cycle the heat content would be incremented by 2. but as heat=work shouldn't that extra 2 be lost as work and at point 1 you always have hc=5? watch the video to make sense of my question.. :)

Yes, I caught that error also.
It clearly says, Q=W. which means all added heat is converted into work, as a result there is no change in internal energy, (delta)U=0.
Then why did he say, Q is incremented in every cycle. He should have said, practically (delta)U would never be zero.

Who is this guy (the teacher), anyway?