Lots of questionable assertions in this very speculative article. "According to general relativity, every gravitational wave should leave an indelible imprint

Lots of questionable assertions in this very speculative article. "According to general relativity, every gravitational wave should leave an indelible imprint on the structure of space-time...." All kinds of possibilities can be found in equations. The derivation of possibilities is no guarantee that they correspond with physical realities. An earthquake leaves an undelible imprint on some matter in space-time. Different thing. The presence of stars is said to 'warp' space-time. Never saw a suggestion that the warp is permanent. Do stars orbiting a galactic center 'permanently warp' the space-time they pass through? "How, exactly, will a passing wave distort space-time? The possibilities are literally infinite, and, puzzlingly, these possibilities are also equivalent to one another...." Literally infinite? Colorful language, no math, no hint of why the possibilities are non-zero. "While detecting the memory effect caused by a single gravitational wave is infeasible with current technology...." Maybe so much speculative fiction based on no empirical evidence is no fit way to conduct science.