List the similarities and differences between Irene and Vincent, Including their attitudes to their imperfections?

Irene and Vincent are both attracted to each other. They are both part of the space launch program to Titan. Irene is genetically engineered while Vincent was born the "old way". Vincent has to compensate by working very hard and even altering his body to be in the launch program. While Irene can be herself, Vincent must pretend to be somebody else. Irene comes to accept Vincent when she finds out the truth.