A dream of inviting our old citizens to bitcoin will not be possible if we ourselves lacks the fundamental knowledge about it, the best way to properly explain things is to first learn and use it.
What do you mean by [fundamental knowledge] required to invite others? I think it's necessary to know that bitcoin function like any other app and we don't have to understand the code behind it. I want to say that you don't have to be a coder or programmer to be able to use bitcoin or to understand its usefulness.
have met allot of people and some of them are already old (60 above), and for them, there's no room for improvements in terms of transactions as even bank transfer is hard for them to execute that they need someone to support them while doing so.
The most important part IMO is to simply explain that bitcoin can be considered as a currency (cryptographic one) and as a paiement system as well; a conbination of two systems. This may help old people who belong to old era to start adopting the concept as something simple and ordinary to use by everybody, reminding them on how they adopted new paiement methods like ATMs and PayPal which are both a paiement system using FIAT as their currencies .