5. Time Travel
Time travel is the concept of moving between different points in time in a manner analogous to moving between different points in space, either sending objects (or in some cases just information) backwards in time to some moment before the present, or sending objects forward from the present to the future without the need to experience the intervening period (at least not at the normal rate). Although time travel has been a common plot device in fiction since the 19th century, and one-way travel into the future is POSSIBLE given the phenomenon of time dilation based on velocity in the theory of special relativity (exemplified by the twin paradox), as well as gravitational time dilation in the theory of general relativity, it is currently unknown whether the laws of physics would allow backwards time travel.
4. Final Theory
A theory of everything ( TOE ) is a putative theory of theoretical physics that fully explains and links together all known physical phenomena, and predicts the outcome of any experiment that could be carried out in principle. The theory of everything is better called as the final theory . Many candidate theories of everything have been proposed by theoretical physicists during the twentieth century, but none have been confirmed experimentally. For centuries, physicists have sought to unify the known forces. Currently there are four fundamental forces: electromagnetic, weak nuclear, strong nuclear, and gravity. While the Electroweak Theory by a Pakistani physicist and Nobel laureate Abdus Salam has unified weak nuclear and electromagnetic, the Theory of Everything would require that all four be unified. The primary problem in producing a TOE is that general relativity and quantum mechanics are hard to unify. This is one of the unsolved problems in physics.
3. Simulated Reality
Simulated reality is the proposition that reality could be simulated—perhaps by computer simulation—to a degree indistinguishable from “true” reality. It could contain conscious minds which may or may not be fully aware that they are living inside a simulation. In its strongest form, the “simulation hypothesis” claims it is entirely possible and even probable that we are living in a simulated reality. This is quite different from the current, technologically achievable concept of virtual reality. Virtual reality is easily distinguished from the experience of “true” reality; participants are never in doubt about the nature of what they experience. Simulated reality, by contrast, would be hard or impossible to separate from “true” reality. In brain-computer interface simulations, each participant enters from outside, directly connecting their brain to the simulation computer. The computer transmits sensory data to the participant, reads and responds to their desires and actions in return; in this manner they interact with the simulated world and receive feedback from it. The participant may be induced by any number of possible means to forget, temporarily or otherwise, that they are inside a virtual realm (e.g. “passing through the veil”). While inside the simulation, the participant’s consciousness is represented by an avatar, which can look very different from the participant’s actual appearance. A dream could be considered a type of simulation capable of fooling someone who is asleep. There has been no more influential thought experiment than the so-called “ brain in a vat ” hypothesis, which has permeated everything from cognitive science and philosophy to popular culture. The experiment asks you to imagine a mad scientist has taken your brain from your body and placed it in a vat of some kind of life sustaining fluid. Electrodes have been connected to your brain, and these are connected to a computer that generates images and sensations. Since all your information about the world is filtered through the brain, this computer would have the ability to simulate your everyday experience. If this were indeed possible, how could you ever truly prove that the world around you was real, and not just a simulation generated by a computer? If you’re thinking this all sounds a bit like The Matrix, you’re right. That film, along with several other sci-fi stories and movies, was heavily influenced by the brain in a vat thought experiment. At its heart, the exercise asks you to question the nature of experience, and to consider what it really means to be human.
2. Space Colonization
Space colonization is the concept of permanent human habitation outside of Earth. Although hypothetical at the present time, there are many proposals and speculations about the first space colony. It is seen as a long-term goal of some national space programs. The first space colony may be on the Moon, or on Mars, or in a space habitat or elsewhere. Ample quantities of all the necessary materials, such as solar energy and water, are available from or on the Moon, Mars, near Earth asteroids or other planetary body. Building colonies in space would require access to water, food, space, people, construction materials, energy, transportation, communications, life support, simulated gravity, and radiation protection. It is likely the colonies would be located by proximity to such resources. The practice of space architecture seeks to transform spaceflight from a heroic test of human endurance to a normality within the bounds of comfortable experience.
1. Perpetual Motion (Infinite Energy)
Perpetual motion – the solution to all problems, describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not. There is undisputed scientific consensus that perpetual motion would violate either the first law of thermodynamics, the second law of thermodynamics, or both. Machines which comply with both laws of thermodynamics but access energy from obscure sources are sometimes referred to as perpetual motion machines, although they do not meet the standard criteria for the name. Despite the fact that successful perpetual motion devices are physically impossible in terms of our current understanding of the laws of physics, the pursuit of perpetual motion remains popular. While the laws of physics are incomplete and stating that physical things are absolutely impossible is un-scientific. The conservation laws are particularly robust from a mathematical perspective. This was proved mathematically by Noether’s theorem. This means that if the laws of physics (not simply the current understanding of them, but the actual laws, which may still be undiscovered) and the various physical constants remain invariant over time — if the laws of the universe are fixed — then the conservation laws must hold.