I remember being ridiculed for having more questions than answers
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Article contains ad hominem and personal opinions. Author is/was personally offended by certain events and his blog provides a source of relief for his distress.
I would comment on every specific paragraph, but the "arguments" are simply absurd.
That is only true if assumed that the rocket will not gather additional energy on the trip.
Also the premise that the energy has to be concentrated to a certain are for the rocket to work is wrong. You can have as much energy on as large area as you want without reaching the critical mass and collapsing into a black hole. The rocket can be of any size to work.
Even so, a black hole is the perfect source of energy. Converting mass into energy without loss via hawking radiation. And the mass is collected when moving trough interstellar medium. Such micro black hole( it has to be small to radiate fast enough ) would still weight a lot and moving it would be difficult, but not impossible.
That is actually false from the frame of the traveler. Using constant acceleration, the traveler will observe constant energy usage. Then length contraction will guarantee that you can reach speeds arbitrarily close to speed of light( and also any location in the universe ) in about ~50 years with 1G acceleration.
But the more you accelerate the spaceship, the more energy you need, with the energy diverging to infinity as your speed approaches that of light. At some point, your spaceship will become so energetic that it, too, will collapse into to a black hole.
That is simply wrong. It is called relativity for a reason. An object might be traveling arbitrarily fast, but in its reference frame it is not moving.
That pretty much invalidates that part of the article.
I believe you misrepresented that algorithm. While it is true that Shamir's Secret Sharing is unbreakable if you split the actual clear text among participants, it is not used that way. The actual use is to use SSS to encrypt and distribute the key used to encrypt the clear text.
Do you know that StackOverflow does not tolerate abuse and there is a flag option to automatically review any comment or post. In the rare case that doesn't work out you can directly contact moderators or developers who will actually respond. No community is perfect and you should really consider that options if you were offended. I have yet to see any ridicule that wasn't removed in 15 minutes or less.