On 06/08/2017 11:03 AM, Cindy Hamilton wrote:
War, yes. Animals build, although their creations are less
complex than ours, since their brains are less complex.

Or their brains are more complex and they realize they don't need a
McMansion and grinding mortgage payments when a simple nest would do. A
beaver might not build Hoover Dam but the dam he builds does the job.