LHC starting up again

[Anomalocaris]

The existence of the vacumn pressure is not an educated guess.   It was when Einstein proposed it, and he guessed it for the wrong reasons.    But it is a validated fact now.   How it works is still an educated guess.   Occum's razer say since it clearly works, some explanation of how it works would be true.   so guessing specifically how it works so one could test these guesses individually does not violate occum's razor.