This is the basic principle of investment, and if you give someone an idea about investment, never involve yourself in it. Ensuring your own safety is very important, someone will invest with excessive expectations from your words, but if they do not get the results as expected, they will blame you. And it is very natural to blame them like this. So if you want to explain investment to someone, you have to explain it in such a way that he himself takes a long-term investment decision. Just educate him about investment, if he is really interested in investing then common sense will be enough for him.
Your teaching and the words you pick to describe what Bitcoin is to someone will determine how they will react towards you if investment goes wrong or right, you can start by telling them how price of bitcoin can fluctuate and can’t be predicted they can’t get quick profit from it like they are assuming or see online, you give them the vital information and allow them to decide so that they can take sole responsibility for their decisions and not go hold you accountable for their lose or impatient.
Yes I believe that words from the teacher has a great influence on the students so for someone who is telling another person about Bitcoin investment the person shouldn't just concentrate on sweet talking the person so they can invest in Bitcoin rather I think they should be able to tell them the truth and nothing but the truth so that they won't hold them accountable if they invest tomorrow and their expectations were not met. Infact I don't support anyone telling people to invest, you just have a talk about how the investment works then you let them decide if they will like to invest or not. People should learn to make their own research after being talked to by someone and they should be able to know what to expect even before investing in Bitcoin I believe it will help the people who introduced them to the investor to be safer.