How real are these ideas? While you can read the patents for yourself, it's evident that the tech necessary to actually create the devices described is beyond our current capabilities. Yet research into many of these fields has gone on for years, which may explain why the Navy expressed an interest. Another likely influence is the fact that the Chinese government seems to be working to develop similar technology. The fantastical inventions devised by Dr. Pais largely build upon an idea that he calls "The Pais Effect." In his patent write-ups and in an interview with The Drive, he described it as "the generation of extremely high electromagnetic energy fluxes (and hence high local energy densities) generated by controlled motion of electrically charged matter (from solid to plasma states) subjected to accelerated vibration and/or accelerated spin, via rapid acceleration transients." This effect amounts to the ability to spin electromagnetic fields to contain a fusion reaction. The electromagnetic energy fields would be so powerful that they could "engineer the fabric of our reality at the most fundamental level," writes Pais. In practical terms, this invention could lead to a veritable revolution in propulsion, quantum communications, and create an abundance of cheaply-produced energy. Certainly, an extraordinary claim that requires extraordinary evidence, as posits the Sagan standard.
Despite the well-founded unease at Dr. Pais's inventions, the Navy took them seriously enough to run experiments for three years and even found some of them "operable," although the extent of that alleged operability is under debate. In the patent documents, two Navy officials seemed to assert the operability of the inventions. Furthermore, in correspondence with The Drive's "War Zone," Timothy Boulay of NAWCAD, stated that Pais's High Energy Electromagnetic Field Generator was, in fact, tested from 2016 until 2019, at a cost of $508,000. The team working on the project consisted of at least 10 technicians and engineers and put in some 1,600 hours of work. But upon the conclusion of the testing, the Pais Effect "could not be proven," shared Boulay. What happened subsequently with the tested device and further investigations is not known at this point. There are indications in documents obtained by The Drive's WarZone through the Freedom of Information Act that the inventions could be moved to another research department in the Navy or the Air Force, or possibly even to NASA or DARPA, but whether that really happened is not clear."One of the most attention-grabbing designs by Dr. Pais is the 2018 patent for a cone-shaped craft of unprecedented range and speed," writes Ratner. "Another futuristic patent with far-reaching ramifications is Pais' Plasma Compression Fusion Device. [...] Notes from researchers who worked on vetting Pais' ideas indicate that a possible outcome of the plasma fusion device and the high energy levels it may generate is the 'Spacetime Modification Weapon' (SMW). Research documents refer to it as 'a weapon that can make the Hydrogen bomb seem more like a firecracker, in comparison.'"
Pais also has a patent for an electromagnetic field generator, which could create "an impenetrable defensive shield to sea and land as well as space-based military and civilian assets." Another device conceived by Pais that could deflect asteroids is the high-frequency gravitational wave generator.