From the builtin hardware random number generator. Enabled by adding "bcm2708_rng" to /etc/modules. Standard rng-tools to add entropy from this device to pool.

Some computers much more expensive than the PI do not have a Hardware RNG built in. Both my intel desktop and my laptop don't have a hardware RNG. If you try to generate a key, these computers will stop while gathering entropy. But not any more. I use my pi to dump random numbers into the entropy pools for all my computers that don't have an RNG.

There are other hardware RNGs available, but none as inexpensive as a PI. Also because the PI has an RJ45 connection, it can be plugged into my router where it can serve random numbers for all computers on my lan.

It is easy to imagine a scenario where evolveablity is a long term selective disadvantage. Imagine a species with certain traits that allow it to survive a catastrophe that occurs infrequently. However these traits are dead weight during the good times (=most of the time). If the creature evolves to fast, it will lose all its catastrophe surviving traits during the good times and and get wiped out during a catastrophe. However if it evolves slowly these traits will survive the catastrophe and culling during the catastrophes will insure it keeps its catastrophe surviving traits. And perhaps the characteristic of slow evolution.

They should set up their own CA in some country immune to US pressure. They would not have to do the actual signing. (Probably difficult due the current fishbowl they live in.) They could hire the people set policies put their logo on it. They could set it up so actual signing occurs anonymously in some unknown country.

Probably the only CA I would trust.

The govenment can not admit that it has access to encrypted material. If it did the method would become useless.

I think that ordinary people using crypto for ordinary purposes, the NSA's crypto abilities are irrelevant. Ordinary people are protected by "Coventry logic". Yes, I am aware there is a controversy concerning whether the Coventry story actually happened. It does not matter. "Coventry logic" remains valid.

If an important commonly used crypto program like gpg or ssl were broken by the NSA's mathematicians, it would be a secret of the highest order. Any use of the secret tends to reveal the secret. Therefore the secret can only be used for national business of the highest importance. Most people's secrets are just not that important, even if they involve matters that the federal government does not like. Thus most ordinary people are protected as free riders. This is "Coventry logic".

It is for this reason that the NSA's abilities should not be probed. If some investigative people probed the NSA's abilities, with fake messages about fake plots and that scheme worked, it could remove the "coventry logic" protection that millions of people now currently enjoy. If an important secret were forced out, then why not use the secret? Thus it is in no one's interest, other than the genuine malefactors, that this type of secret be probed. Everyone else has an interest in strategic ambiguity.

The more a signal is compressed, the more it looks like random noise. The only way you know the difference between a signal and random noise is redundancies. But redundancies represent an opportunity to save power and bandwidth, by adding compression.

The typical alien civilization has had hundreds of thousands of years to work out compression algorithms.

On top of this, spread spectrum might be used.

So what makes anyone think that SETI or anyone else would be capable of recognizing an alien signal if they saw one?

The fact that people are trying to draw conclusions from this failure, is a sign only of colossal human arrogance.

The GPL restricts the "Extend" step so that Discontinue step is impossible.

Any derived work of something, like git, which is GPLed, must be GPLed. That means that if you fork, the main branch, the main branch is free to use your extensions. This makes it difficult for replacement to work.

Furthermore, if you try discontinue step, others are free to fork and continue. So discontinue does not work.

The GPL completely breaks the "Embrace. Step 2: Extend. Step 3: Replace. Step 4: Discontinue." process. Which is why it is hated.

absence of evidence is not evidence of absence.

This reply usually confuses them enough to go away.

Deveopers should do what they are good at, developing.

Testers should do the testing.

Packagers should do the packaging.

Sysadmins should do installations.

Requiring devopers to know everything in the Debian Policy manual would be too much.

Put up another video saying that no one should join that religion, what ever it is, since its leadership is all liers.

No one knows the answers to questions like this.

Philosophers and theologians prove exactly what they assume, no more.

These questions are a complete mystery.

Get Used to it.

A real test for science will be when someone discover some result as disturbing as this one, the result gets independently confirmed, and then it just sits there unexplained, for 10 or 20 years.

This result may not be an example, yet, because it has not been independently confirmed yet. (Who knows if it will be?)

Something like this is bound to happen sometime. (Some think it already has.)

Will physicists have the courage and humility to admit current theories are broken, or will they act like geologists with respect to Wegener, before nuclear fission was discovered?

What is scientifically known is infinitesimal speck in a sea of truth.

What is currently known is a very small faction of that which could be scientifically known.

Science is a restrictive methodology i.e. the scientific method.

Human beings have ways of knowing things that are not scientific. So the class of things that could be known, is even larger, than the class of things that could be scientifically known.

And then there are the questions human could pose, for which there is no conceivable way for humans to confirm an answer.

This is the unknowable. "Our line is too short to fathom such immense abysses."

Then there are those truths for which humans can not even formulate the question.