Gary Shilling, a prominent economist, has warned that the S&P 500 could experience a significant 30% drop by the end of 2026, driven by inflated stock valuations and a potential recession in the U.S. economy. Shilling's comments come amid growing public concern over President Donald Trump's economic policies and the detrimental impact of artificial intelligence dependence on stock performance. Recent market data shows the S&P 500 has fallen 71.47 points or 1% this week, alongside declines in the Dow Jones and Nasdaq indices. Inflation is also a pressing issue, with a key measure rising 0.7% in March, leading to a 3.5% increase compared to the previous year, marking the largest jump in nearly three years. Gas prices have soared to $4.39 per gallon, further straining consumer budgets and potentially leading to reduced spending and economic slowdown.