Can u lot(including Fraginal Noypi!)tell me the downside to random selection of politicians!!!!?

Question

I ask this cos when mass democracy started in britain(in the
1600's), Both sides couldnt stop arguing and so Cromwell
got rid of them-both Right and Leftists,too.Now,it seems that
this start-of mass representation,what most of us have now,
has carried-on with these inherant faults in it.
So can the terribly-risky alternative way of Randomly selecting
our"intelligent-but ordinary" politicians work?And to all our
benefit(s)?

Answer 1

Random selection over time ensures mediocre (average) leaders. Our goal should be to select exceptional ones.

Answer 2

Random eventually wouldn't be random, it would be pre-selected.