the test is constant

The Test Is Constant. Collage by Douglas Brent Smith (c) 2015

You are welcome to use this image for non-commercial purposes as long as you provide the following attribution:

Collage by Douglas Brent Smith (c) 2015

Non-professional purposes include using the image to illustrate an article, blog entry, tweet, Facebook posting, or other social media use. For professional use involving the sale of any items or including the image in the sale or solicitation of any product or publication for money please first contact me at douglasbrentsmith@gmail.com