There was a lot of trial and error in the development of Michael Craig-Martin's 'An Oak Tree'. The idea sat with him most of his adult and he had many failed attempts at getting it just right leading up to it's final iteration in 1973. This is a recent discovery of what is believed to be his 32nd conceptual trial. It was found in an abandoned shack in the far north of Ireland.
png; 7200px x 4114px @ 200ppi; 38.3MB This image was created using a selection of text to image AI images made with Adobe Firefly Image 2 and Midjourney (firefly.adobe.com) and composited in Adobe Photoshop.