Grazie Pozo Christie is correct that the science has changed since Roe v. Wade was decided in 1973 (“,” Oct. 29). But a decision like Roe should have been based on what the Constitution says, not what science says. Science may change from day to day, but the Constitution does not.

Orlando, Fla.

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Grazie Pozo Christie is correct that the science has changed since Roe v. Wade was decided in 1973 (“The Obsolete Science Behind Roe v. Wade,” Oct. 29). But a decision like Roe should have been based on what the Constitution says, not what science says. Science may change from day to day, but the Constitution does not.

David Peterson

Orlando, Fla.