So I've been thinking about a science fiction setting for some time. It's supposed to be a rather soft space-opera/science fantasy style, although I'm going to try not to overtly hand-wave or ignore reasonable explanations for why things work that they do. (For example, I'm not going to have space-age people fight with swords just "because it's cool.") Since detailed world-building isn't my strongest suit, I thought I'd list some technology I've planned to incorporate so see if I've overlooked anything that might cause trouble. (As an example, I originally wanted both teleportation and FTL travel to be done via portals that instantly bring you to your desired location, but realized that might largely invalidate space travel.) So, I would appreciate if you guys would look through the following list and let me know if you think of any issues I might not have considered: -All really advanced technology is based on psionics, defined as the technological application of psychic phenomena. Attaining psychic potential and an understanding of psionics (normally via precursor artifacts found across the galaxy) is considered a sort of rite of passage. Sapient species who have not yet achieved this can be observed but making contact is considered impertinent. (Compare warp capability and the Prime Directive in Star Trek.) Basically, psionics represent a technological paradigm shift that makes you worth talking to. -The keystone of psionic technology is a type of precursor technology resembling a flat piece of glass or crystal with a metal rim. They function as conduits of psionic energy but can also store extreme amounts of information, including the engramatic totality of a conscious mind. While no living species understands exactly how they work, they can be produced by construction artifacts designed to do so. They are used in weapons, communication devices, computers and many other technologies. It is suspected that they served more functions for the precursors that haven't yet been discovered. -Power is provided by generators producing effectively limitless clean energy. Said energy can also be easily transmitted wirelessly. -Spaceships traversing normal space can travel extremely fast without being affected by time dilation, inertia and other such issues: The ship itself compensates for these things. -Ships can also warp into a pocket dimension were normal limits of space and time don't apply, allowing them to travel to a desired location more or less immediately. The ship can not interact with normal matter at all during this transit. Powerful psychics can learn to do the same thing on their own, effectively allowing them to teleport. Doing this repeatedly over a short period of time may cause one to lose all sense of time and space, resulting in a temporary psychosis-like state. Thus, most people try to avoid using this mode of travel more often than necessary. -Instantaneous real-time communication can be achieved regardless of distance. -Artificial gravity is standard on all ships, space stations, etc. Tractor beams and levitation devices are likewise common. -Psionic shields have rendered kinetic and explosive weapons (including nuclear weapons) obsolete as they completely negate all damage from natural forces. Such shields can protect ships and cities, project from hand-held devices and be generated at will by psychics. -The most common type of armament is beam weaponry, or beamers, which fire pulsed energy beams that disintegrate matter at the point of contact and disrupt shields, eventually causing them to temporarily collapse. Beam weapons produce no recoil, but do generate vibrations that can complicate aiming. They can also overheat if fired too frequently. On the other hand, they do not require ammunition, reloading or recharging. -Bolt cannons function in a similar way to beam weapons but fire bolts that move much slower and explode on impact, acting as the replacement for artillery and missile weapons. -Wyrdblades are melee weapons with the ability to cut through psionic shields (as well as practically any form of matter) with little to no resistance. Since shields have made close combat considerably more viable than in the past, wyrdblades are fairly common in a variety of forms such as rifle-mounted bayonets, boarding cutlasses and longswords. While resembling and "energy sword", they do act as physical objects, although with some rather odd properties. While they can be wielded by anyone, they are especially emblematic of psychics, against whom even beam weapons can be unreliable. Wyrdblades are also one of the few types of psionic technology that can't be replicated by psychic power alone. (Or at least no psychic has yet to manage it.) -"Power armor" exists in the form of a bodysuit with artificial muscles that greatly augments the strength of the wearer. Armor plating is then attached on top of it, made from an alloy that partially resists disruption beams and similar weaponry. Even without the armor, the augmentation suit is popular among explorers, adventurers and other people of various trades, who commonly wear them under regular clothes like robes or tunics. They can double as space suits, worn with backpack-like "rigs" equipped with an oxygen supply, collars that deploy helmets, and either thrusters or bionic wings for maneuvering. -The galaxy is littered with abandoned precursor ruins and derelict space habitats. While much of their technology can no longer be activated or reverse engineered, most societies share a fascination with (or in some cases religious reverence) for them. Because of this a subculture of adventurers, explorers and xenoarcheologists are devoted to exploring precursor structures and finding new ones, hoping to discover unusual artifacts. That's all I can think of for now. I tried to stick to technology, rather than the various aliens or where psychic powers come from, since otherwise I'd end up describing the entire setting in way too much detail.