I didn't say people are unable to interact, I specified direct mental influence. We can communicate and experience others via the five bodily sensory faculties, but we can't do it directly from mind to mind.
Good and bad experiences are the result of karma. Meeting the Dharma is a result of karma. Being able to practice is a result of karma. This subject is covered in Vajrayana preliminary practices, isn't it?
Maybe I am missing something? Naturally these things are the result of karma. However, doesn't the karmic seed require supporting conditions to bring the appropriate result? I distinctly remember that it does.
Regarding direct mental influence - how, then, can we account for things like mind terma?
While transmitting esoteric teachings to his realized disciples in Tibet, Guru Padmasambhava concealed many teachings with the blessings of his enlightened mind stream in the nature of the intrinsic awareness of the minds of his disciples through the power of “mind-mandated transmission” (gtad rgya); thereby the master and disciple became united as one in the teachings and realization. Here, the master has concealed the teachings and blessings, the esoteric attainments, as ter in the pure nature of the minds of his disciples through his enlightened power, and he has made aspirations that the ter may be discovered for the sake of beings when the appropriate time comes