I can understand the argument that it's a form of modification rather than simple "healing" or "regeneration", but it's still taking an organ that either evolved or was designed (depending on the world's/race's mythology) to see, and enabling it to do so; whereas "bespoke" modifications sound like they'd be entirely arbitrary.
I can understand the argument that it's a form of modification rather than simple "healing" or "regeneration", but it's still taking an organ that either evolved or was designed (depending on the world's/race's mythology) to see, and enabling it to do so; whereas "bespoke" modifications sound like they'd be entirely arbitrary.