Like any tool we use for Divination remember that energy is I feel neither an open or closed thing, more its a portal at times that can be open all the time. When we use things we might not understand we can bring in energy we are not ready to deal with.
No one know this better than me, I am an open portal to the other side, to that we call the Spirit World, and its not all fun and games when dealing with the non living. Remember they "were once flesh and blood" like we are now. They are not a play thing !
I am all for thing to "prove" and "investigate" to learn what might or might not be real. Too I respect energy and I do not play with it without due respects.
If the crow has chosen you as your spirit or totem animal, it supports you in developing the power of sight, transformation, and connection with life’s magic.