Not exactly using computers, but what will be a suitable indicator of the fact that the civilization is beyond saving. Also it's not a college class query, it'

Not exactly using computers, but what will be a suitable indicator of the fact that the civilization is beyond saving. Also it's not a college class query, it's out of genuine curiosity, but hey that's what killed the cat right? though I think that not asking this question might cause a significant setback in overall condition of us as a civilization right now.