It might be fruitful to consider related questions: How can humanity ensure that its distant descendants effectively pursue current values? How does a nation ensure that in several generations its government will pursue current values. How can a non-profit organization ensure that its future incarnations pursue the values of its founders? How do parents ensure that their children will pursue parental values? How do individuals ensure that when older they will pursue younger-version values?

There clearly are limited degrees to which all of these things are possible, but it also seems pretty clear the degree is quite limited.