I've pointed this out elsewhere in this thread: That's not what the chart is saying. The description reads "Probability that computerisation will lead to job losses in the next two decades", not "probability that computerisation will completely replace this job".

For example, in economics, there might be a need for fewer economists because computers are able to do some of the work that previously had to be done by humans. But they're not suggesting that there's a 43% chance that there will be no human economists in 20 years, or that there will be such a thing as a computerised economist - it'll be aspects of the work that are automated (at least initially), not the whole job.