Inflation, a spike or something more?

Sources:
The Kiplinger Washington Editors. (2021). The Kiplinger Letter . The Kiplinger Letter- Forecasts for Executives and Investors.
Kelton, W. (2021, February 16). TIPS Spread . Investopedia.com . https://www.investopedia.com/terms/t/tips-spread.asp.
The Editorial Board. A Made-in-Washington Inflation Spike, Congress feeds demand but constricts supply, and the Fed stays easy. . wsj.com. https://www.wsj.com/articles/a-made-in-washington-inflation-spike-11623362377.
Madey, R., Kideckel, K., & Connuck, M. (2021, April 12). Wealthcare Portfolio Update.