1.   The other simple analogy is to the chain reaction of nuclear physics.

2.   The thermodynamic approach can be illustrated using a simple mechanical analogy.

3.   As a simple analogy, if a disk drive were a phonograph, the platter would be the record album.

4.   Innu president Peter Penashue used a simple analogy to explain his abhorrence of low-level NATO combat flights over his homeland in northeastern Canada.