Fallacy definition (short name: amphiboly)
From Stephen’s Guide :
An amphiboly occurs when the construction of a sentence allows it to have two different meanings.
Last night I shot a burglar in my pyjamas.
The Oracle of Delphi told Croseus that if he pursued the war he would destroy a mighty kingdom.
(What the Oracle did not mention was that the kingdom he destroyed would be his own. Adapted from Heroditus, The Histories.)
You can’t put too much water in a nuclear reactor.
Implies that you should use lots or very little water in a reactor.
Identify the ambiguous phrase and show the two possible interpretations.