Clogs and AI Autonomous Cars - AI Trends

When my children were young, we had a toy that they assembled consisting of seventy-five plastic interconnecting tunnel pieces, including having numerous tall ramps and winding paths, and when a marble was dropped into the topmost funnel it would be of great delight to all as we watched the marble roll throughout the structure. It was advertised via a slogan that said down the tube it goes, where the marble stops, nobody knows, and presumably helped teach my children about physics (well, it was actually mainly just a lot of fun). Being quite rambunctious, the kids sought out new ways to test the capabilities and limits of the toy. Putting one marble down the shoot was fun. Perhaps putting two marbles would be twice the fun! They tried this and it made them squeal with delight. If two marbles are twice the fun, certainly four marbles would quadruple the fun. They kept increasing the number of marbles and with each such increment the plastic contraption would shake and shimmy more so. How many marbles would the system withstand?