In that it's extremely common. In the gritty real world, people know of such guys and what they do. Many have personality men such gentlemen and their entourages (of course most not at the level of Epstein, but frequent some circles in Eastern Europe, Russia, Paris, London, Italy, etc, and you'll meet such guys, no doubt in Asia and L. America too), and know what "assistants" who look like models and are from Eastern Europe sum up to...
Of course it won't be as evident to someone in rural Iowa, or growing up in the boy scouts, they'd need to have things spelt out for them...
>Would somebody who is trafficking women really take them everywhere he goes? I thought it would be more of a secret affair.
At such meetings like at MIT usually no.
But shady rich guys with political/drug/mafia/trafficking connections take their women (even underage or barely legal) all around, in restaurants, boats, nightclubs, business deals, parties, etc. And not just criminal/underworld types: this even includes world leaders, like Berlusconi, all kinds of royalty, rich moguls, etc...
In some countries you can't throw a rock in a public event without hitting one such...