Objects of the mind are characterised by atemporality and aspatiality (my term) while objects of reality (things) are characterised by temporality and spatiality.
Representations of things (mind-objects) are inconsistent with reality (thing-objects) because of this difference in characterisation. Phenomena and noumena are distinct. Problems arise when we engage with reality with non-existent (without ontology) atemporal and aspatial characteristics of objects of the mind.
object metaphor theory 