I feel like we are in this situation where all these unknowns box us in so much so it's funny. We can't really share sensory perceptions, we don't know what our persisting sense of self really is, but we can somehow (what even is it to know?) talk in language (limited by context) about experiences to determine what we think the material causes are - in the process creating objective objects (the apple we see different) which are the parallel to our linguistic understanding. So I guess we can't really say anything about whether or not our mind influences our reality, nor can we know in language whether there is a unified/uncaused truth in reality.

a few seconds ago
Eh yea now as far as empirical knowledge goes I think it's pretty simple. A relationship between the statements and the object understood perhaps exists, it is on somewhat firm ground (I see skeptical arguments now as a bit weak), and is (the world of objects and of statements about them) bound by the laws of context - being here now/being constantly shifting/transmitting meaning.