The beautiful thing about when you go through a slide is that you learn from it. Not just saying that you learn from it, but applying the things that you have learned.
I've just taught thousands of people over the radio in the USA how to mend broken watches and broken house appliances. I am a catalyst or trigger to access these powers.
For example, a breakthrough in better batteries could supplant hydrogen. Better solar cells could replace or win out in this race to the fuel of the future. Those, I see, as the three big competitors: hydrogen, solar cells and then better batteries.

