The Fascinating Turnip

I haven't read enough about this subject to have a forged opinion yet, and I apologize if this has been answered/asked before, as i haven't read all the comments:

How can "Jacques Fresco" blatantly say that there are enough resources for everyone to live abundantly?

That's it? The only "proof" i've seen him give is that the US churned out 90000 fighters per year during WWII. Of course, capitalism leads to waste. During the Great Depression lots of food was burned while people were starving, and that's obviously not f*cking all right. But how can he be sure there's enough food for everyone?

Also, let's not forget human nature...it's made other "perfect" systems fail. Or did he also say that everyone was essentially good? Just like that?

And how exactly is progress the cure for all our needs? I'm sure the Unabomber would disagree...I jest, but still.

For example, wouldn't the automating of the services currently performed by humans, who'd instead have more time to "think", make us even more unhealthy than we are now? In my experience (which is little, but hey, what else have i got?) boredom (i.e "having too much time to think") leads to being unhealthy, both physically and mentally. On the other hand, I'd gladly spend my whole life travelling around, reading, and listening to music. Dilettantism, in the finer sense of the word, i'd say.
This also comes into the competition issue, there will always be conflicting theories, how would all scientists work together? Science isn't philosophy, I'm aware of that, but still.
Plus, competition (although I find agressive competition has the contrary effect) stimulates progress. That's one of the few things that's all right with capitalism. If there was no competition, where would we be? The need for making better products wouldn't exist. Sure, the need for making cheaper and faster resorting to the exploitation of the workers also wouldn't exist, but i believe progress can exist without exploitation.

I'm not sure everyone is like this, though.