+1
That's the only way.
I was way too trusting when I got to grad school, everyone was new and didn't give a s**t at the start, but how quickly things change...
I had a ph.d student who was my assistantship supervisor, she didn't associate with anyone I know period and wouldn't know one way or another, but somehow she came at me one day out of nowhere suggesting sideways that I was a big time pothead. I admittedly smoke pot every once in a while (for reference, the last time was like 4 months ago) but wouldn't do it in front of people I didn't at least somewhat trust, and I am definitely not a stoner. No clue where this crap came from, and no clue how deep into the program this "information" has filtered.
It could be as simple as people in the midwest stereotyping me, I've met people out here where the first question was "Oh you're from Oregon, you must smoke a lot of dope huh"
Either way, it's people making assumptions, people making s**t up, or people you "trust" going behind your back on a level that is at best speculative and at worst malicious.
That was not the only catalyst, but I've learned, and the # of people in my program I will associate with beyond a passing superficial level has been reduced from 20+ down to 4.
For all I know, even 4 may be too many.
_________________
I know I made them a promise but those are just words, and words can get weird.
I think they made themselves perfectly clear.