"Most people" know approach forcing style very well. It's "simple", it's "obvious", and it's effective - because it's all they've ever played. "Most people" do not understand relays - frankly, even getting some to deal with Kickback responses or 1♠-2NT; 3♣ "any minimum, then 3♦ says 'reply the same steps as if you had extras last round'" is very difficult. And while I have never played a full relay system, I am quite certain that the judgement required when you know "3361, any 9+, if I ask any more we've lost 3NT" is very different - but probably no more difficult - than that which we all use after a similar amount of information passing in approach forcing. And of course, the only experience "most people" - even "most people who declaim about relay systems" have with understanding relay systems is playing against it, when the information comes one hand at a time, without the coherent skeleton. So, of course they won't be "easier to use". For most people. Add to that that there are just people for whom lots of memorization, especially with sensible guiding principles that can be used to regenerate the path at the table if necessary, is low-energy. I am one of them, at least I was 15 years ago. Those that aren't - especially those that will concentrate so hard on not forgetting the system that they don't have energy left to follow suit - are probably not suited to relays. I haven't played a full relay system, but I have 15 years of experience with Precision, half of that being full asking bid Precision. I can totally understand Tarzan here, because I frequently said the main advantage of Precision is "the system thinks for me, at least one round farther than standard." Because it's automated that much further, there are so many auctions that are mindless. Yes, of course, the reason it's mindless is that a huge amount of memorization and practise was put in beforehand; and yes, of course, artificial forgets were much harder to recover from than "when you're just bidding suits", but that really didn't happen often. And eventually, you *save* thinking energy for when it is needed. And I don't think you should really equate "it technically didn't matter so much" with "less effective". It sounds an awful lot more like "just as effective, in a 'swings and roundabouts' fashion" to me.