When I was stuck between dimensions for 30 years, I met Rick... After I told him about my journals, he wanted them almost as bad as Bill. Last year, he showed up with his grandson and almost killed me trying to take them. I shot at a tree just to show them what it could potentially do and apparently one miss fire of the Quantum Destabilizer scared them off.
Seems kinda unlikely that Rick, the smartest man in the universe, able to create an impenetrable shield on his body and a device which can kill whoever touches him, wanted a group if dusty journals about creatures which he could probably steal from interdimensional market. Also it's really unbelievable that he got scared by a weird old man who got tricked by a triangle, who missed a clear shot. Another thing: "trust no one", remember? How come would Stanford tell to a Rick about his darkest secrets?!