Can we draw the following hypothesis from the context?

Context:

Grandfather Frog scratched his head thoughtfully and looked a long time at the dam of logs and sticks and mud .<br>Then his big mouth widened in a big smile .<br>'' Why , that is very simple , '' said he , '' Jerry Muskrat will make a big hole through the dam near the bottom , because he knows how , and the rest of us will keep watch to see that no harm comes near . ''

Hypothesis: Grandfather Frog scratched his finger thoughtfully.
No