When Swedenborg mentioned publishing the Flying Machine , Polhem was skeptical as to whether it was possible to ever build a machine that could fly .
When Swedenborg returned to Sweden in 1714 , he met with inventor Christopher Polhem and together with him published the periodical Daedalus Hyperboreus .
When Swedenborg mentioned publishing the Flying Machine , inventor was skeptical as to whether it was possible to ever build a machine that could fly .
When Swedenborg returned to Sweden in 1714 , he met with inventor Christopher Polhem and together with him published the periodical Daedalus Hyperboreus .