I assume you know that patenting teleportation is more than just writing down "I patent teleportation."
So, let's so with your example. Someone has an idea for a teleporter, and at great expense comes up with the blueprints that will let it be manufactured. However, it will take $3 billion and 2 years to create a working example.
With patent protection, the inventor can seek out industrial or financial backers to produce it. Those parties can hire their own scientists and engineers to verify that the blueprints ought to work.
So, let's so with your example. Someone has an idea for a teleporter, and at great expense comes up with the blueprints that will let it be manufactured. However, it will take $3 billion and 2 years to create a working example.
With patent protection, the inventor can seek out industrial or financial backers to produce it. Those parties can hire their own scientists and engineers to verify that the blueprints ought to work.