My impression after seeing this.
It is certainly possible for even politicians and doctors to be replaced by them.
However, even in a simpler field, any pioneer developing it can not be replaced.
Because BIG DATA is a data which human give with an index to the last - Shogi 's past game record, the distribution of people riding taxis, the record of passengers getting on and off in the past, and criminal record etc - they can not become pioneer who can add an unknown index for now.
Not to persist in common sense can be survived in any occupation.
People should not be afraid and need to know AI's mistake is not due to computer but just HUMAN developping it.
But Even it can be more reliable than human-induced bias due to personality or malice due to desire of authority.