If I was an index investor

OK but what kind of interest rate are we talking about exactly? Is it the federal funds rate, the treasury rate, or the risk-free rate of return? Just want to understand what am I looking at, as an investor, if the “interest rate” changes from 8% to 10%. How high is it now, by the way?

That’s extremely interesting to me. I will repeat my question: do you think Terry Smith & Fundsmith invest in quality stocks, ergo: are they potentially at risk here?