Premise: it looks to be a glass maker heating up some glass to make something while visitors in the background watch him
Correct statement: We believe that a glass maker is demonstrating his craft in front of an audience .
Incorrect statement: It is impossible that a glass maker is demonstrating his craft in front of an audience .
Correct statement: There is a better than even chance that a glass maker is showing off for the visitors .
Incorrect statement: It is improbable that a glass maker is showing off for the visitors .
Correct statement: It is highly unlikely that a glass maker is working on making a blue vase as a demonstration .
Incorrect statement: It is highly likely that a glass maker is working on making a blue vase as a demonstration .
Correct statement: It is probably not the case that a glass maker is heating up glass to construct a beautiful vase .
Incorrect statement: It is probably the case that a glass maker is heating up glass to construct a beautiful vase .
Correct statement: It is certain that a person is making something out of glass .
Incorrect statement: It is probably not the case that a person is making something out of glass .