Technology changes too. I did a show in June this year. When I committed to the show a year and a half before, I knew all the images I wanted to frame for it. In the meantime, I began using VC Forte Fiber, and realized what I could do that I had not been able to before with graded paper. In Feb, I rethought the whole show based on some 4x5 stuff I shot 20 some years ago, but could never print to my satisfaction. I worked a few sessions, and developed the "recipes" at 8x10 size, then proceeded to order the 16x20 I would need for the exhibition. You know where I'm going - by then I bought what was probably the last 60 sheets to be had in the US, from 3 different warehouses! Well, I digressed, but still the point, I have an additional 6 images in the portfolio because I can now print them.