They do know you still need users that actually know about APS...

They do know you still need users that actually know about APS and it's only the automated facial assessment which only detect the "presence" of pain, this was what threw me as well.
https://www.researchgate.net/public...ion_of_a_Point-of-Care_Technological_Solution

"The user must be trained on the use of the tool and be familiar with the patient undergoing assessment. The user needs to navigate from one domain to another to complete the assessment.
Scoring: The ePAT uses a hybrid model in which the Face domain is fully automated while other domains (Domains 2–6) are questionnaire-based checklists manually completed by the assessor, using the mobile device."