there is no scientific evidence or widely accepted theory that supports the existence of a working time machine, including Ron Mallett's laser time machine. Ron Mallett, a theoretical physicist, has proposed a concept for a time machine based on circulating laser beams in a specific configuration. However, his idea has not been experimentally proven or replicated by other scientists.
It's important to note that even if a time machine were to be developed in the future, the concept of sending information or objects back in time raises several paradoxes and challenges, such as the grandfather paradox. These paradoxes suggest that altering the past could lead to logical inconsistencies and contradictions.
Regarding the specific question about modifying Mallett's time machine to send information back more than 10 years, it is purely speculative since his proposed design has not been validated or tested. It would require substantial advancements in our understanding of physics and the nature of time, which are currently subjects of ongoing research and exploration.