"We could accept all of what we have today, and take it for granted, and we'd live with it forever. But that would suck." The inverse of that is having everythi

"We could accept all of what we have today, and take it for granted, and we'd live with it forever. But that would suck." The inverse of that is having everything change so quickly that we can't ever accomplish anything. It's all about striking that balance between improving tools and making the product or service. Given how long Fortran has lasted in the scientific community, something is going to have to be remarkably better than TeX for people to switch. Old ways die slowly, especially in the sciences. As Kuhn's Structure of Scientific Revolutions observed, old ideas are usually only replaced when the old people die.