Math should not be taught as a linear process, but as a spiral. Visit the topics at first, so the student can understand why something is important when it is presented rigorously.

I'm not an engineer.... but.....

Ceramics have much higher melting temperatures than metals. This could lead to an engine with a much higher operating temp and therefore higher thermal efficiency., i.e. much better mileage.

What I'd like to see is someone build an engine with all the bells and whistles: Ceramic block, ringless pistons, high temp coolant ( no water )..and lubricant.

What would the mileage be? And could it be manufactured in the millions?

If Jonathan Pollard was right, does that make Snowden right?

If Pollard was wrong, isn't Snowden wrong too?

Does Snowden's "service to humanity" compare to Pollard's "service to Israeli intelligence"?

Now, Pollard was an officer in the US military. Snowden was a mere "contractor" for the NSA. What were their obligations?

I'd like to see a debate on these questions.

Read the NY Times article. The SAAB is much cheaper to operate. Looking at it, I think of it as an updated Northrop F5.

We have monitoring stations in the US, They have monitoring stations in Russia. Why don't we arrange to exchange data? That way nobody has to worry about "spying". Each will know what data the other has.

That way, our Trident subs lurking under the polar icecap will be able to use the improved GLONASS data to improve their targeting.. The Russian boomers in the sea of Okhotsk will do likewise.

And the world's economy will benefit from improved combined GPS / GLONASS accuracy.

Either that, or return Kepler to low orbit with a single-purpose Ion Drive Space Tug, (Solar Powered?) and fix it.

What is the required delta V? Might take a while, but the thing is expensive. Would it be worth it? Maybe not.