The two details from the story that help develop it into a satire are:
-
Gortsby is very cynical and distrusting of the young man he meets.
-
The setting, which takes place in Hyde Park at dusk, is dark and mysterious.
These elements contribute to the satirical tone by highlighting Gortsby's negative outlook on life and human nature, as well as the somber ambiance of the setting that reflects the broader themes of defeat and disillusionment in society.