User blog comment:Aeratus/Guide to the Adam Jensen Clone Theory/@comment-178.214.10.194-20171008131823/@comment-178.214.10.194-20171008220030

It doesn't make for bad writing but it makes value of that writing pretty low as it doesn't do anything original and unique but copies safe schematics from other medias. There were several survivors after Panchea and it was said that Adam survived thanks to RX Sentinel augmentation. Opening credits and trailers show that he wasn't deep under the water at all.

They went too far with that body in Palisade Vault soo leaving it vague isn't the most compelling option at this point. It worked in Blade Runner because it gave very subtle nuances for both and gave little to no evidence for either side which is not the case in Deus Ex: MD.

Flash cloning is possible but it's not untill around 2052. If it was before they wouldn't bother with whole JC operation (fake parents, fake teachers, fake environment etc.) that costs too much money and effort. Game follows Deus Ex Bible canon as official timeline shows birth of Paul Denton in 2018 (Morpheus also says to Denton that he is 23 years old, there's no reason for AI that gives true information about people lie specifically to Denton).

All we can do is wait for sequel but game already took a stance that turned interesting themes of a game into some cliche done before numerous times unless they have some mindblowing explanation for body in Vault.