 Other debates surrounding sociobiology are still ongoing. For example, while methodological adaptationism has become and remained the standard approach in behavioral ecology, not all philosophers are convinced that this is an entirely benign practice – there are still concerns about the assumptions that this methodology requires (see, for example, Lewens, 2009; Lloyd, 2005). Similarly, there has been an increasing interest in the role of culture in the nature and history of human behavior; work studying the evolution of culture has increased since Lumsden and Wilson (1981) published their book. Philosophers and scientists are still addressing questions about how and how far cultural traits can be said to evolve; and, as discussed above, whether traits that have evolved in this way can be considered adaptations in any sense (Driscoll, 2011; Fracchia and Lewontin, 1999, 2005; Henrich et al., 2008; Sperber, 2006; Sterelny, 2006).