The legal process is governed by the Rules of Civil Procedure, adopted about 60 years ago in most states. Before then, the legal system could best be described as “Justice by Ambush,” because neither party was obligated to tell the other party anything about his case, his evidence, or his witnesses. Everyone just showed up in court and presented whatever evidence and witnesses they had, of course trying as hard as possible to create major surprises to which the other side could not quickly react and rebut. To correct this obvious problem, the Rules of Civil Procedure were adopted, basically requiring “full disclosure” of all evidence well in advance of trial so both parties could be properly prepared. That process worked very well for a while, but “full disclosure” 60 years ago meant something far different than it does today.
When I first started practicing law in 1969, there were no computers; indeed there was no photocopying equipment, no post-it notes, no portable dictating equipment, really no electronics of any kind. When we wanted to look at records maintained by other parties, we had to go over to their offices, read the documents while they were there (often in dingy basements shifting through boxes and boxes of junk). We then made handwritten notes about the documents (lawyers could not type in 1969), and put paper clips on documents we wanted the other side to bring to court (and hoped that the clips would not fall off accidentally or intentionally). We completed our document discovery usually in a day or two. It didn’t cost much, took very little time to complete, and was a reasonable approach to equalize the playing field for both sides.