Traceback (most recent call last):
  File "/Users/magicliang/Desktop/Programming/git/hexo-blog/examples/system-design/labs/35/session-dispatch/spatial_authority_naive.py", line 18, in <module>
    assert len(live)<=1,'cell-owned independent authority duplicated the same driver'
           ^^^^^^^^^^^^
AssertionError: cell-owned independent authority duplicated the same driver
