If someone doesn't have a clue about what is bitcoin then forcing them to buy can be a bad idea, what if the price crashed once they bought and you are the one who they will blame you. So guiding them when they realize bitcoin is their path is good but when someone still haven't made up their mind can take their time. Better late than never cause if they do it for wrong reason and faced the loss they might exit the market and will never think about coming back.
So this isn't entirely about the price, it's actually the cause that should drive them to invest, a person who truly understand bitcoin will not be shaken by the volatility so the short bumps and dumps will not likely to alter their strategy if DCAing or whatever they want to practice.
Some of you are really confusing yourself because if you are introducing some one into bitcoin you will never forget to mention the strategies use in accumulating bitcoin,like buying the dip.so during the process of explaining this strategy buying the dip you have end up explaining to the person what bitcoin volatility is.It is impossible to force someone to invest in something they are not interested in because will all have different views about something.There are so many investors that understand the volatility of bitcoin but whenever there is a dip they are grip by fear of the fact that history may not repeat itself.people are much more afraid of what they know than what they don't know.