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Hello Joshua.
As an amateur astronomer I've done some reading about cosmology and I might be able to help you on the 'failed attempt' problem you mention.
Back in 1922 the Russian scientist Alexander Friedmann found that solutions to Einstein's field equations (of General Relativity) fell into three groups (or types) of universe. These are known as Spherical/Closed, Hyperbolic/Open and Flat universes. Please refer to the diagram on this Wiki page which neatly shows all three types.
http://en.wikipedia.org/wiki/Shape_of_the_universe
When it comes to Inflationary theory, Closed and Open universes are generally considered to be "failed attempts", because they never permit stars, planets and galaxies to form. Closed universes contain too much mass/energy and Open universes contain too little. Only Flat universes (like ours) have just the right balance of mass/energy to inflate at just the right rate, allowing life-friendly conditions to persist for billions of years.
But we cannot see these failed universes because they are completely disconnected from our own universe.
There's nowhere you can look in our sky that isn't part of our own, geometrically Flat universe.
Ok, this is difficult to take in, but maybe an analogy would help? Try this. No matter how diligently you scour the surface of
this planet, you'll never find the hardware left on the Moon by the Apollo astronauts. It's impossible.
Does that help?
Thanks,
E.I.