There are times when the bond market is very explicitly manipulated, such as towards the end of WW2 in the US. The country's economy was getting seriously inflationary and rates were pegged at 2% (the rate should have been probably over 10% without the manipulation). Thankfully there was much collective sacrifice and the country managed to win the war in time before its economy imploded. Then the typical post war recession and later the baby boom solved everything.
You can detect such situations by things like: wage freezes, rationing, shelves not completely full in shops, large premium on gold bullion particularly small coins, the politicians' talk of "great effort", things like that
Also, reach out to the source. Want to know if "China is hoarding dollars?" Well try to verify it yourself via Treasury data or IMF data. Want to know how does Apple actually make money? Read their statements at sec.gov
Also, if you want names:
Ray Dalio puts out a lot of good research for free as a means of building his legacy. Robert Shiller wrote a lot of good econ. As far as investing goes it's really tough to beat the common sense logic of Warren Buffett and co. and Benjamin Graham and co. The true masters of speculation include George Soros and Jesse Livermore.