Solar is very predictable and very high availability if the panels are placed properly: synchronous orbit.

The number of people killed by being sucked into tidal gates, hydro-power inlets, etc. is not zero.

Your times are too long by a factor of two. Two high tides and two low tides in just over 24 hours.

It will reek havoc...

You people who can't write English are so funny.

A mesh is the wrong choice. Parallel bars can be mechanically scraped easily, automatically, and often.

Making it possible for customers - the people who actually pay for the electricity and have to live with the power plant near their city - to get electricity at a decent price. If the government gets the money, it's an invitation to waste, a temptation to bribe voters, and a lure to those who would like to abuse political power.

The sort of freedom that used to exist in America is everyone's birthright, but all governments suppress it. It is not an elevated status, it is the natural status of man. Someone who enters the country illegally has earned a degraded status by breaking the law.

Saying "reform" the immigration system is meaningless, It sounds good to people who don't think, yet it could mean anything from "encourage freeloaders to come here" (which is Obama's official but hidden policy) to "shoot everyone who sneaks across the border."

Sneaking into the country is not a "minor infraction", it's a de facto invasion by an ununiformed enemy.

Well, you don't see it, but there's likely a 15 point IQ difference between the Soviet Jew and the wetback. Guess which one has more ability to do good.

Even if most immigrants are good, that does not mean that on balance the effect of illegal immigration is good. Its very easy for a single person to destroy more than 10 people can create in a lifetime, and that's just the sort of thing that a jihadist who sneaks through our porous borders wants.

Your personal experience is almost meaningless. Do you expect an enemy to tell you he's out to destroy the country?

Would you mind defining "social change"? Do you mean promoting the activities of murderous rioters? Providing free money and drugs for people who refuse to work? Free abortions for whores? Jailing CEOs when the Sarbanes-Oxley forms don't give correct results to the penny?

The word "social" at the beginning of any phrase means there's something bad being hidden.

When considering the cost of finding and deporting illegal aliens, it must be compared against the cost of failing to find and deport them. Some aspects of illegal aliens are: drunken unlicensed illegal drivers killing pedestrians (no, licensing them does not make it OK), new outbreaks of measles, mumps, and tuberculosis, and the World Trade Center. Still think it's too expensive to eliminate illegal aliens?

Sorry, it doesn't work that way. We're already well past the point where we can ignore channel leakage considerations, and their interaction with transistor thresholds, supply voltage, and other things. Gate leakage is becoming a problem. Power supply conductors can't be scaled due to migration, they now commonly take up a whole layer. At a guess, I'd say the asymptote for big silicon CPU clock rates is 10 GHz, more than a decade away.

Much of the speedup in the last 2 decades has come from SIMD and multithreading. Multithreading still isn't heavily implemented, so there's a big gain to be obtained there, and the hardware to take advantage of it is more cores, which scaling obviously helps.

More memory on-chip is good, but numerous tests have shown that we're already well into the area of diminishing returns for most applications.

You're confusing GaAs with germanium.

In high speed silicon ICs, SiO2 is no longer "a great gate insulator" because the dielectric constant is too low. Channel resistance is roughly inversely proportional to the dielectric constant of the gate material. This was a big deal a decade ago, but now "high K" material use is routine and hence seldom mentioned.