They're not supposed to. If the examiner has reason to believe that the patent's specification doesn't provide enough detail to allow a person of ordinary skill

They're not supposed to. If the examiner has reason to believe that the patent's specification doesn't provide enough detail to allow a person of ordinary skill to make and use the invention, he should issue an "enablement" rejection under 35 U.S.C. 112. Note that I haven't read the specification of this patent, and have no opinion on its enablement or lack thereof.