<prompt> Human: I have built up around 10,000 in my emergency fund. I am debating investing the 10,000 in US government bonds in order to prevent the money from losing value to inflation, since I am receiving about 0.01 interest on the money while the 30 year yield on a treasury bill is about 2.72. It is easy to exchange them for cash at my bank even if they have not fully matured yet. Are there any upsides or downsides that I have not yet considered?edit: What about a money market fund?  <response>: No it is not easy to exchange them and you will lose money on early-redemption. This is not what an emergency fund is for. Its cash you can transfer in seconds if you have, well, an emergency. 