 Critics may object to the necessity of these conditions. According to Berislav Marušić (2015), I can form the ‘practical belief’ that I will do A without knowing that my intention will be effective, so long as I know that its execution is up to me. A more common objection is that the conditions are not sufficient. They assimilate intention to faith, as when I form the belief that I can leap a great chasm even though I have no evidence of my ability to do so, knowing that the belief itself will ensure success. It is not clear that such acts of faith are possible, that they are epistemically rational, or that they provide a plausible model for intention (Langton 2004; Setiya 2008, §III). On an alternative view, there is a general demand for prior evidence in forming beliefs, but our intentions are sometimes exempt from it, as perhaps when we know how to perform the relevant acts (Setiya 2008; Setiya 2009; Setiya 2012). It is know-how that explains why the execution of our intentions, and thus the truth of the beliefs that they involve, can be credited to us.