fiftyoneverbal
Joseph: Only when it’s cold outside does the classroom heater turn on, and the heater is currently off. Therefore, it must not be cold outside.
Which of the following represents a flaw in Joseph’s reasoning?
a) Joseph assumes that a way something was done in the past is the way it is currently being done
b) Joseph’s argument is based on statements that cannot be found to be true
c) Joseph ignores the possibility that the heater may be turned off even when it is cold outside
d) Joseph presumes that everyone’s definition of “cold” is the same
e) Joseph ignores the possibility that sometimes others turn the heater on even though it is warm outside
C easily seems to be the correct answer here.
Consider this example below -
Eg. - The band performs in Greenland only during summers.
Does this statement mean that Band is performing every summer....... NO...... Right?
But we are sure that whenever the band is performing in Greenland, it is doing during summers only.
Going back to our question.
Only when it’s cold outside does the classroom heater turn onDoes it mean that when it's cold outside, is the heater turned on always. No right ?. [You can try imagining yourself also in this situation

]
Hence answer is clearly C