>>212445365
well I guess you can hand wave that they had a strict hand off approach and saw the seeded planets as sterile incubators. Seed it and see what happens. most of the 4 billion years was spent as single cells anyway until the mitochondria revolution happened which allowed for eventual multi cells. Dinos are a mere short chapter in it and even more so the human monkey

thank god the jesus crap never made it off the cutting room floor so at least you can now build that reason engineers started interfering on earth was the emergence of homo sapiens, a species close to them. Also reason for wanting to terminate earth immediately was that they were developing far too quickly and would become space born in short time (for cosmic scales engis operate on). Which they did not want for humans, and piggy backing earth life like bacteria inside human bodies, to escape their designated incubator