 An unusable hypercomputational process is a physical process that fails to satisfy at least one of the first four constraints on physical computation. Examples include processes whose inputs or outputs are arbitrary real-valued quantities (which cannot be read with infinite precision) and genuine random processes (which have no rule characterizing the inputs and outputs independently of the process and are neither repeatable nor settable). These processes are not usable because an observer cannot obtain from them arbitrary values of an independently defined function on a chosen input, as ordinary computing systems can (given enough time and space). Since they are not usable, unusable hypercomputational processes are irrelevant to Modest Physical CTT.