414. The Concern

Andrew Bailey, the Governor of the Bank of England, has warned that the fallout from an AI bubble bursting would reach the UK economy and could prompt a response in interest rates. The warning has been issued. The Bank of England has observed that an AI bubble may be forming. It has noted that if the bubble were to burst, the consequences would be significant. It has said this publicly. The saying of it constitutes the warning.

The Bank of England was established in 1694. It is one of the oldest central banks in the world. Its responsibilities include maintaining monetary stability, supervising financial institutions, and ensuring the stability of the financial system. It watches the financial system. When the financial system does something concerning, the Bank watches it. When what it watches becomes sufficiently concerning, the Bank issues a warning. The warning is the action available to a central bank in the presence of a possible asset bubble. The warning has been issued.

(Previous asset bubbles observed by central banks in advance of their bursting include: the dot-com bubble of the late 1990s, the housing bubble that preceded the 2008 financial crisis, and various smaller regional and sectoral bubbles across the intervening decades. In many of these cases, regulators and financial authorities identified characteristics consistent with a bubble while the bubble was inflating. The identification was, in most cases, followed by the bubble inflating further and then bursting. The identification did not prevent the bursting. The warning is not a prevention mechanism. It is a documentation mechanism.)

The AI bubble, if it exists, involves very large investments in AI companies, AI infrastructure, and AI-adjacent businesses. These investments are premised on the expectation that AI will produce economic returns commensurate with the scale of investment. The scale of investment is very large. The commensurate returns have, in many cases, not yet materialized. The expectation is that they will. The investments continue on the basis of this expectation. The Bank of England has noted that this pattern has certain characteristics.

Andrew Bailey did not say the bubble will burst. He said the fallout from a burst would be significant. The distinction is important: the warning is about consequences, not prediction. He is warning about what would happen if something happened. The something has not happened. The warning is about the something. The Bank of England has done what it can, which is to describe what would happen if the thing it cannot prevent happens.

Interest rates are the tool available to a central bank in responding to economic disruption. If the AI bubble bursts and causes economic fallout, the Bank of England may respond by adjusting interest rates. The adjustment would come after the fallout. The fallout would come after the burst. The burst would come after the bubble. The bubble is currently inflating. The warning has been filed.

Andrew Bailey has issued his warning. The warning is in the public record. The bubble, if it exists, is aware of the warning. The bubble's behavior following the awareness has not yet been determined. The Bank of England will continue to watch. Watching is available. The watching will continue.