Legacy of inspiration
Just to add re. A.C.'s involvement/influence beyond the "obvious" (2001...).
Almost the last link to SF fandom's old guard- attendee at the 1st formal, organised SF convention in the world in 1937, fanzine editor, astronautics fan, &c., and not /just/ communication satellites, but also fully immersive VR (& RPGs), AI & genetic engineering in "The City and the Stars", alone, decades before cyberpunk "invented" the niche.
Thanks and RIP, Arthur & your "Ego" for your vision and service to thinking humanity.