Read the paragraph. Jacobi was having a hard time coming up with the final verse of a song he was writing. His older brother, Anton, was coming home after two years away serving in the military. Jacobi wanted to welcome him home with a song. He called his little sister over and asked her what she missed most about Anton. The two started sharing funny stories and, in no time, Jacobi knew would finish his song. As it turned out, two head were better than one. What is the meaning of the adage in the paragraph?