"The $5.68 million research program..." It struck me how tiny the amount of money involved here is. Let's say this engineering effort was a one one-thousandth

"The $5.68 million research program..." It struck me how tiny the amount of money involved here is. Let's say this engineering effort was a one one-thousandth step along the way to developing the technology into a major energy alternative. Then that would be, what, $5B? Perhaps I'm overestimating the significance of this discovery.