What can become a problem with algorithms programmed based on the collection of existing data, according to West?

Existing data may be faulty and lead to computer$-$generated decisions that are inaccurate.

Data can be manipulated by corrupt software programmers to produce only desired results.

These algorithms take peoples' jobs away.

Historical data sets often reflect traditional values, which may or may not represent the values or preferrences wanted in a current system. Existing biases are "baked into" the algorithms.