Unability

difficulty doth not make me despaire, much lesse my unability: for it is but mine owne.

Source: wiktionary

there being so many whose businesse and profession meerly it is, to be the champions of Truth; which if they neglect, what can be imputed but their sloth, or unability?

Source: wiktionary

Until today we have not made much progress over Democrit who postulated that it is only our unability to register and explain a great number of fast events in a non-linear way, i.e. not according to the principle of cause and effect.

Source: wiktionary

For the most common unabilities of disabled and older to perform different tasks in the kitchen, some adapted elements, including a robot-arm, have been designed.

Source: wiktionary