as far as I'm concerned, unless we somehow colonize a large portion of the galaxy, we really wouldn't need light speed. Say we find a habitable planet (meaning materials to build an airtight base, not just fully habitable like earth) within 20-50 light years of Earth. if we can travel near the speed of light, then we could still get items and people there relatively fast.

Robert W. Bussard designed a type of propulsion system knwon as the Bussard Ramjet. It basically scoops up interstellar hydrogen and compresses it to undergo fusion. It then uses the fusion reaction as an exhaust which propels the craft further, which gets it more fuel. This craft would therefore ignore the "light speed requires infinite fuel stored onboard" requirement because it gets its fuel en route. The problem with this is that we have theorized that the interstellar hydrogen is of a much lower density than Bussard originally guessed. This could be solved by pre-seeding the trajectory of the craft between its departure point and its destination.

The technologies I am discussing however, are at least hundreds of years from being perfected. And as Kami pointed out, once all the oil on this planet is consumed, we will literally tear ourselves apart unless we plan for that point and have alternative energies researched and ready to go by that point.

How about you explain why you think it will be possible and within 300 years.

I don't think it will be possible at all. Imagination is good and all but this is reality, not sci-fi.

you are exhibiting clear indications of "failed to read the thread" syndrome.

Il let other people give their ideas. I was going to post why I thought that but I didn't have much time.

I don't think so - and if they do, it better happen in my time of living

I dont think our body can handle that speed, the pressure can simply crush our body into dust

Its possible to get rid of that, pressureize the cabin better.

Its not the pressure that would kill us, no pressure can be easily dealt with -- its the initial acceleration of this imagined super rocket or w/e. We already need to train astronauts to handle the extreme acceleration of a rocket going to the moon, but if you're going to go to such high speeds, the kind of acceleration that is required would simply destroy our body. If some how we can survive the initial acceleration then when the ship is traveling at constant velocity we would be totally fine even if the ship was going at C.

There would also be the deceleration.

eh if we don't survive the acceleration who cares about the stopping part lol, and if we do survive acceleration we can probably survive deceleration provided that acceleration doesn't leave you half dead haha.