So... Why did you say spacetime, again?

Too many post about intentions, not enough about the subject. Sorry.

It's important to fix things in order to stablish a shitty order worth of changing in the future.

As an engineer, I said previously physics -and math models about physics involved in a phenomena- were the key to design and construct cool stuff. For instance, we want to have water from a tap. We know water moves easily -as a fluid- by differences in pressure, so it seems a good idea to pressurize water in order to move it along tubes and conductions. You can fill bottles of water and transport them from a place to another but, is that practical? 

Sometimes it is, but when you want to carry a lot of water from a place to another... Man, you better attack the problem in its Achilles heel, which usually is the fundamental physical principle which gives Nature its "nature". In water, it is differences of pressure -there are actually more ways if you look closely to NS conservation of momentum equation for a fluid, but difference of pressure is quite a good choice.

The same applies to rockets and satellites. 

Ariane V launching 3 satellites in 2005, from cnes web

Rockets allow to lift cargo from planet surfaces to orbit, and accelerate this cargo to a certain velocity. This allows tthe cargo, our satellite, to maintain its orbit. Once it is off the atmosphere, the satellite can conserve its velocity -with time, almost everything decays sadly- and can remain orbiting. The velocity my satellite moves determines its orbit. Quite a funny thing due to gravity's central force -in a classical and good for now explanation.

That's in the basics, of course. Reality is far more complex. 

Anyway, space rockets -people use to call them launchers too- are a remarkable thing. They born as an idea between the ending of XIX century and the begining of 20th and after WWII they started to be used in space exploration -well, chinese knew about rockets quite a lot time before that, but can be admitted Tsiolkovski was the first -or maybe one of the first people-, in taking the idea to the future.

Nevertheless, I don't like rockets. They are remarkable pieces of complex engineering, and people who design and construct them deserve more than admiration, but I don't like them.

They are dangerous, noisy and incredibly expensive. They serve to its purpose as good as 1 kg of dynamite can be used to kill a fly.

Please, I don't want to be misunderstood: rockets are the only thing we have. 

But in my opinion, they should be replaced. There must be something better we can invent.

There are actually, several ideas about it and they are quite more plausible than warping spacetime, but I like attacking spacetime for two main reasons:

• Warping spacetime could solve escape velocity problem (gravity in planets tend to bind things to the surface) if an energy competitive solution is found -that is something people don't take very seriously and they have good reasons for that.
• It can also give alternatives for velocity limits stablished in modern physics.

I know. A FTL engine is quite a sci-fi concept. For the moment, I would like to warp spacetime for not needing a rocket to put things into orbit. FTL travel is a higher order impossibility, but if it can be done -and maybe it is not possible, but let's find out!- it seems reasonable to think spacetime can have a little word in that.

For Einstein what we normally call gravity was a consequence of spacetime curvature. You want to defy gravity? Well, warping spacetime maybe it's the Achilles heel we should point at.