The not guilty verdict was a combination of Marcia Clark's incompetence and jury bias (which also points to Clark's incompetence.)
I lived in California and was driving home when the verdict was announced. One jurist said she was sure OJ was innocent. The reporter asked what convinced her that OJ was innocent. She said (paraphrasing) that OJ only had 10 minutes to go upstairs, take a shower and get back downstairs to catch his limo ride. He couldn't possibly have done that in only ten minutes. THAT convinced her beyond a doubt that he was innocent.
Several months of testimony and THAT was the deciding factor in her mind!!!@!!! What an idiot!!!
When I got home, I decided to test her theory. I started my watch stopwatch, walked (not ran) upstairs, turned on the shower, undressed and tossed my clothes in a suitcase while waiting for the shower to warm up, took a shower. Toweled off. Took time to wash the shower walls of any potential blood stains. Threw the dirty towels in a duffel to be discarded at the airport, dressed, picked up the duffel and the suitcase, and walked (not ran) down the stairs and out the door. Total time... 6 and half minutes. ...and I didn't even rush or have my clothes laid out to put on! It was totally impromptu.
Clark looked like a deer in the headlights during the trial. She was totally, completely, overwhelmingly, embarrassingly outmatched. She showed up one day with her hair still wet. The women was too disorganized to even get dressed properly to be in court.
Allowing the trying on of the glove was especially incompetent. OJ wore latex gloves and then tried to put his gloves on OVER the latex gloves!!! That's extremely hard to do. Those latex gloves stick like glue when you try to put a leather glove over them.
Not to mention, there are drugs that cause water retention, which would make OJ's hands swell.