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Comment Re:Will this make glowing watched cheaper? (Score 2) 51

If you want a fusion power reactor, by far the most viable fuel is D+T. You'd need orders of magnitude more tritium than is could ever be extracted from trace fission byproducts.

The idea to obtain this much tritium is to use the extra neutrons from the fusion reactor itself to breed it from lithium. This is supposedly a demonstration of that process.

Comment Re:Resonate with customers (Score 1) 79

This was a pre-emissions model (the car wasn't new when I got it). The only pollution control I remember it having was a PCV valve. After adjusting net vs gross HP, the 5.7L engine was rated for similar power as my current (non turbo) 2.5L. It also probably burned through 2.5X the fuel, and produced orders of magnitude more smog.

The new car is probably heavier, but I assume that a wider power band and more efficient transmission give my current car the overall edge in performance specs. The old car probably had better bottom-end torque, so it could do burnouts easier. That, along with the loud noise, rattling chassis and very scary handling characteristics probably made it feel faster than the current car, but that's nothing but psychology.

Comment Re:U2 album fiasco all over again (Score 2) 78

Last I heard, Apple sales haven't plummeted and thrown them into bankruptcy, so it sounds like they learned the lesson just fine: it's fine to show people ads. People might complain a little bit, but they won't stop buying. Cost is $0 and ad revenue is presumably more than $0.

If someone is stuck with your proprietary software and you aren't showing them ads, then you're leaving money on the table. What're they gonna do, fork it out?

Comment Re:Speed it up! (Score 2) 11

Where did I say I was expecting similar performance? But Python is slow even for an interpreted language especially given its usually compiled to bytecode first. I would expect similar performance to Java , not run at approx 1/100th the speed of compiled C!

1/100 the speed of compiled languages is typical for interpreted languages.

Non-ancient implementations of Java are fully compiled. Toy benchmarks and Java programs carefully written as if there were no automatic memory management (and don't call standard libraries) can run just as fast ac C code.

Java can't directly support features that depend on dynamic typing and similar flexible run-time behavior that interpreted languages. However, many Java developers sorely miss those features, so they heavily use the reflection APIs and various "beans" frameworks to work around the pre-compilable static typing. This can actually end up running *slower* than Python because many of those Java features are dog slow.

You can already get implementations of Python that do JIT compiling like Java. They often run in the ballpark of about 1/10 the speed of C.

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