Introduction

i'll read through our parts of it once more, and i might make a few comments along the way. A, he begins by providing a personal anecdote. And this is where, as a graduate student, he's talking about how he was working with some fellow s. He was observing galaxies through microscopes. Some shapes are so faint that it is hard to tell whether they are sharp. Nowadays, such measurements are made by computers using sophisticated patternt matching algorithms. But in those days, one just had to examine each object carefully and use rules of thumb.