Here is the scenario:
In "Dark Pursuits" Chapter II (pg 431) under 341 Beta-Sky the book states that a Difficult -10 Tech-use test is required to commune with the shuttle's machine spirit and convince it to reveal its secrets. Well none of my PCs are Adeptus Mechanicus, but some do have Tech-use known or +10. Performing any rites to commune, appease, or praise the machine spirits are reserved for members of the Adeptus Mechanicus or allied groups (Tech Marines).
My question is, can my non-mechanicus PCs attempt to interact and retrieve info from a cogitator or Ships data systems? and if so, does it maintain the Difficult -10 penalty for Tech-use as stated in the book? Also, how would you guys/girls explain this concept to players that are new-ish to 40K?