<human>:  What is the relationship between quantum mechanics and relativity?
<bot>: The relationship between quantum mechanics and relativity is complex and still not fully understood. On the one hand, relativity is a classical theory that deals with classical objects such as particles, electromagnetic fields and accelerations. On the other hand, quantum mechanics suggests that micro objects behave differently in many cases than their classical counterparts, suggesting a more fundamental understanding of relativity. Both theories are necessary to fully understand the universe, but the exact relationship between them is still being explored.