In the grand scheme of things, computer-animated movies haven't been around that long. The first feature-length animated movie was "Toy Story" in 1995. "To infinity and beyond!" was the popular catch phrase from the movie.
At the time, it was a technological milestone taking 800,000 machine hours and months to render. Today, you could probably do it in the same amount of time using a single high-end home computer, and today's Pixar could have it rendered in just days. That's how far computers have come in 20 years.
Even though the rendering technology has gotten much better, getting a film to that point is just as time-consuming. Building the computer models, covering them with realistic textures and animating them takes a long time. And one of the trickiest things to animate is faces.
Humans are trained from birth to understand how facial expressions work, and what it looks like when you mouth creates certain sounds. If an animator is even a little off with an eyebrow or corner of a lip, you lose impact, and can even turn your audience off. It's a tough job.
Now, however, Adobe thinks it has a solution that can make anyone an animator.