Comment by cryptonector

Police (in the U.S. anyways) are allowed to use ruses almost without limits, so you might not even know you're being interrogated, and your answers can be used against you (and only against you -- never to exculpate you!) in a court of law.

IMO the hearsay rule is way too biased in favor of the government.

Worse! Say you know it's police asking you questions, and the questions are all very harmless, so you answer them, but then you start to get an inkling that you are a suspect, that they like you for some crime, so now you shut up and/or lawyer up, but guess what: your disposition's change from cooperative to non-cooperative can and will be used against you in a court of law!! What, you say? Yes, the SCOTUS in the 2010s (see Salinas vs. Texas, from.. 2014 IIRC) greatly reduced the 5th Amendment's protections in this way. If you're talking then clam up, the fact that you clammed up -and at what particular question- can be used against you. And if you never said a word to them, that too can be used against you! The only thing that works is to tell them very early on that you will only talk to them with your lawyer present [and since you don't have a lawyer yet you might never talk to them] then follow through.

If the police are talking to you it's either a) they think your testimony can convict someone else, and/or b) they like you for some crime and want to give you ample opportunity to convict yourself of it even if you didn't commit it (they may not know that, but they may like you so much for it that their bias is too strong to see that you're innocent) and even if you have no idea what the heck they're talking about (because they don't even have to tell you).

See all of professor James Duane's videos on this topic, starting with Don't Talk to Police (this one is pre-Salinas), and then the later post-Salinas reprise(s) of it.