There is a similar maaseh brought down where somebody asked one of the tanoim about why it is correct to heal the sick – if G-d gave them an illness, apparently it is His will that they be sick. The Tanah answered with the same analogy, by giving him some wheat and telling him to eat it raw.
Apparently, regarding things that are in our capacity to control, HKB”H gave us the abilities to enable us to control.