 Assimilation may typically result in the response being partially rather than entirely independent of external stimuli. In other words, the response may become less dependent on external stimuli, and more biased in favor of particular results, without becoming automatic. Jablonka and Lamb call this phenomenon partial assimilation (Jablonka &amp; Lamb 2005: 290), and see it as particularly important for understanding the way behavior (BISs) and language (the SIS) affect the evolution of mind. A further mechanism, identified by Avital and Jablonka, is assimilate and stretch. Here, given a limited and fixed capacity for learning, new learned elements may be recruited, when part of a behavioral sequence that formerly depended on learning becomes genetically assimilated (Avital &amp; Jablonka 2000).