 Attempts to apply the notion of logical probability to fine-tuning for life are beset with difficulties as well. Critics argue that, from a logical point of view, arbitrary real numbers are possible values of the constants (McGrew et al. 2001; Colyvan et al. 2005). According to them, any probability measure over the real numbers as values of the constants that differs from the uniform measure would be arbitrary and unmotivated. The uniform measure itself, however, assigns zero probability to any finite interval. By this standard, the life-permitting range, if finite, trivially has probability zero, which would mean that life-friendly constants are highly improbable whether or not fine-tuning in the sense of  Section 1.1  is required for life. This conclusion seems counterintuitive, but Koperski (2005) argues that it is not as unacceptable for proponents of the view that life-friendly conditions are improbable and require a response as it may initially seem.