There is a saying that goes something like this;
"If you get too hung up on the minute particle of any issue, you'll miss the obvious" !
This was mentored to me by a programmer a few years ago when I had a go at computer programming and got too in depth on how the electricity is transformed to a Application on the monitor via programming.
I was missing the obvious in this case, all I wanted to do is create a program to add certain things up. His point was, who cares HOW the Sum total of x
+ y = z occurs from the PC's power supply, just get it to add up correctly with the programming tools available, and let the engineers take care of the of those details that have no direct reverse impact on what I wanted to achieve in the first place.
It seems with the 2-stroke and pollution issue on how much pollution per gallon of fuel as compared to something else will add up is meaningless when compared how much it costs overall to get from point A to B and back to A when comparing a 2-stroke and a Jumbo Jet to travel the same distance
There are only 3 elements one has over the other, that is ego and prestige and Time.
The point is, does it work, does it solve a issue of getting us from point A to point B and back as cheap and as economical as possible, and who gives a rat's razoo if some turkey is at the lights in a expensive gas guzzling state of the art super dooper hi-way snoper and gets to point B 30 seconds quicker ?
He, or she is mortgaged to the hilt to pay the lease on the latest gizzmo and will die of stress.
One less to worry about who contributes more pollution than a dozen of us all riding the same concept of things.
Think of the plastics and all it takes to manufacture the latest wiz-wang-bango-mobil and compare what it takes to manufacture a 2 stroke for our bikes to arrive to the same destination, and back.
Think of and compare the entire person's life span and expenses incurred to eat a loaf of bread if we all buy the same loaf of bread form the same bakery and compare the cost it takes to earn the dollar to buy the bread whether we to travel to work in a Lear Jet or a 2-stroke motoredbike.
Do the math on the big picture ( Total Mass of all it takes from raw material to end product, including human requirements), not just what comes out the exhuast pipe of a 2-stroke bicycle.
The Ancient Greeks had a saying to, or words to this principle.
"We have all the blueprints to make machines, but then we will be slave to the machines, better we walk than push the wheel".
Meaning, the Romans think they invented the wheel and presented it to the Greeks, but the Greeks refused to push the wheel, the wheel being the machine cos the Greeks already had their version of a wheel, in thought and picture ! Then they thought, WHO is going to push the wheel and what if it breaks, which means more work and no play, better to go fishing and who can run faster ! That is why the Greek invented the Olympic Games, instead of the wheel and used sun power to light the torch and no pollution
Heat = Energy from the Sun !!