In a person who is open to experience each stimulus is freely relayed through the nervous system, without being distorted by any process of defensiveness.
Bio: John Landis Mason, was an American tinsmith and the patentee of the metal screw-on lid for fruit jars that have come to be known as Mason jars. Many such jars were printed with the line "Mason's Patent Nov 30th 1858". He also invented the first screw top salt shaker in 1858.