Even if we solve the propulsion problem, there's another problem--uncharted objects like this.
If we could actually speed a ship up to anywhere near the speed of light, even hitting a pebble is likely to blow up your spaceship.
But how do you explain why we don't detect these hundreds of objects in front of other stars?
You're assuming these transits would occur frequently and that we actually have the equipment pointed at the sky to detect them. Even if there were 200 times as many brown dwarfs as stars in the galaxy, actually seeing one pass in front of another star would be an extremely rare occurrence and we'd only detect if we were looking right at that star. Even then we'd only detect a small decrease in light and we'd be unable to distinguish it from the transit of a planet with a long orbital period. Also, consider the velocity of stars in relation to each other? The transit may only visible for a fraction of a second...in which case we wouldn't be able to detect it at all.
These aren't small things, and we can detect wayward exoplanets
Brown dwarfs are small. And we can only detect exoplanets by detecting the effect they have on the wobble of the host star, by their transit of the star, or very rarely we can see light from extremely hot planets.
How come they don't collide? Why didn't they collapse into just being, you know, stars?
Even at 200 times, collisions would be extremely rare. And the collision would be a non-event as far as the earth is concerned. Why don't they collapse into stars [assuming the collision produced a star with sufficient mass to be a star]. Maybe they are? Still the collisions would be so rare that we'd almost certainly never witness the event.
if there's so many how come they haven't been turning up at a clipping rate?
The only part of your argument that really works. Even with the limited instruments we have now, we'd expect to see more if there were 200 times as many brown dwarfs. But then, we're discovering a lot more of these now that we have instruments designed to find them. Regardless, I don't think 200 times the number would account for the missing mass.
I have 16 GB in my mac mini and i dont see a future of me using it all.
This statement is a bit reminiscent of my fellow nerdy friends when I was growing up who could not fathom filling a 100 megabyte harddrive.
You think someone is trying to impose death on you?
Indirectly. I'm seeing several people arguing to let nature take it's course. I'm seeing people argue against transhumanist goals.
Do you really believe in the possibility that 1) there will be a transhumanist "solution" in your lifetime and 2) that you are going to be able to afford it?
No. But that doesn't mean we shouldn't try.
Is it ethically justifiable to permanently subject wild animals to such conditions?
Yes. As restored species they would be protected by man and then have a shot at continued existence in the event humans die off or evolve passed the necessity for a biosphere.
UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things. -- Doug Gwyn