I have trouble taking Michael Crichton's stories seriously partly because of his odd obsession with theme parks.
In Westworld, androids indistinguishable from humans are used for an amusement park. In Jurassic Park, it's engineering of fossil DNA to recreate dinosaurs that is used for a theme park and in Timeline, if I recall correctly, the first idea of a billionaire who manages to develop time-travelling technology is to use it to open a medieval theme park.
Given any of those technology, I think this kind of use would lie pretty low on the list of either interesting or profitable things to do...
In Westworld, androids indistinguishable from humans are used for an amusement park. In Jurassic Park, it's engineering of fossil DNA to recreate dinosaurs that is used for a theme park and in Timeline, if I recall correctly, the first idea of a billionaire who manages to develop time-travelling technology is to use it to open a medieval theme park.
Given any of those technology, I think this kind of use would lie pretty low on the list of either interesting or profitable things to do...