>>52213851Not the Professor's specifically.
The thing about the Paradoxes is that, according to the Pokedex, their history is different depending on the version.
In Scarlet, the past paradoxes were said to be ancient Pokemon described in the old expedition journal while future paradoxes were rumored alien and robotic creatures from pseudo-science magazines.
In Violet, it's the opposite, the future paradoxes were relics (they're explicitly described as objects) described by the expedition journal while the past paradoxes were cryptids that pseudo-science magazines claimed were ancient forms still alive today.
Koraidon and Miraidon take it a step further. They have absolutely no record of their existence in their opposite version.
So they have no consistent backstory, and even within each version there are inconsistencies. Why would Sada/Turo need a time machine if the totally legit reports claim these Pokemon are already living in the present day?