Ectopic pregnancy is a potential complication of assisted reproduction techniques. The question that arises is, can anything be done to prevent it? A recent article (Fertility and Sterility 103; 655-661, 2015) found that the lowest rates of ectopic pregnancies were obtained when frozen-thawed day 5 embryos were transferred (ectopic pregnancy rate: 0.3%) compared to frozen-thawed day 3 embryos (1.9%), or fresh day 3 (2.4%) or day 5 day embryos (1.7%). We ask ourselves though, can human embryos be so coarsely manipulated? Is it ethically acceptable to experiment with them like this?