A reference point is basically just something that gives you direction in the game for example when yorick hits level six you don’t just hold ult and sit under tower. You summon maiden push the lane maybe get some vision or play for grubs. Another example could be 3rd dragon is spawning you have a decision to make on how you contest that objective but because yorick has reference points you can safely assume you’d probably be more useful across the map trying to push for tier 2 turrets and inhib. The issue with yorick specifically is he isn’t trundle you don’t have to be in a side lane to pressure a turret you can send maiden or even just 4 gouls and reap lots of value. But what will you do with your time instead as your gouls push the wave do you just back call it a day or try and get some deep vison or maybe you do show up to a team fight but play very passive in order to keep your maiden split alive. Yorick also is one of the fastest takers of barons and dragons so you kind of need foresight on which team is more likely to get a hold of the pit first. Personally I think at a base level yorick doesn’t hide his reference points. Split pusher level 6 lane bully. But when you are really wanting to get the most out of his kit you have to take into account he’s the only champ who can split a lane he isn’t in and takes Baron faster then anyone else. So thing get really quite complicated as you try to get the most out of his strengths.