[freejazz]

That section is written in parallel verse, with copyright <> science, and patent <> useful arts. This sounds weird, now, but it's consistent with the use of the words at the time, which is the reverse of how they are used today, where paintings etc are considered art, and inventions are considered science. So, it's not that copyright exists to promote science and art (as we call them today) but only just the arts. Patents are for science. Authorship reflects copyright and invention reflects patent:

> Congress shall have the power... To promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries.”