Soto wrote extensively on his own approach to art production. He states in regards to transparency and the use of acrylic sheets, “I wanted to activate the serial lines, to incorporate time and movement into the work in a new way. I found the solution by superimposing two painted surfaces: one opaque and one transparent, with a few inches separating them. I was able to incorporate into the work the space created by the two separate planes, and to solicit the viewer’s participation whose movement in front of the work would activate it.”