 Stegenga (2009) criticizes the approach from robustness. On his view, what he calls “multi-modal evidence”, i.e., evidence obtained by different techniques, is often discordant. If it is concordant, it is difficult to judge if the different methods are really independent. However, Stegenga (2009) does not discuss Culp’s (1995) example of DNA sequencing, which seems to be a case where evidence obtained by different sequencing techniques is often concordant. Furthermore, Culp shows that the techniques are independent in the sense that they are based both on different biochemical processes and different theoretical assumptions.