Did, but passed it by...
If you want to be accurate 1000mg of H2O is 1000ml, but nicotine is a bit denser so that is slightly off. (But good enough for what we do with juice.)
The reason voltage and ohms comes up so much is because they are components of power, or Watts, and that is what is important.
Other than those tiny points, it was a pretty good summary with good information.
(I'm in the "Juice is key" camp myself.)