The basic rules 0.1 state on p61:
When your character searches for a hidden object such as a secret door or a trap, the DM typically asks you to make a Wisdom (Perception) check. Such a check can be used to find hidden details or other information and clues that you might otherwise overlook.
But they also state on p59:
Passive checks [...] Such a check can represent the average result for a task done repeatedly, such as searching for secret doors over and over again, or can be used when the DM wants to secretly determine whether the characters succeed at something without rolling dice, such as noticing a hidden monster.
Which seems like a contradiction: "you use a passive check for secret doors" and "you roll a check to find secret doors".
- If a PC isn't actively looking for a secret door or monsters does it mean they don't get a chance to spotting them at all? (eg: interrupt an ambush)
- When a PC is actively looking for hidden objects or secret doors are they supposed to roll or not?
I like the version where they don't roll because that way they have no idea if they flunked the check or not. On the other hand I like the version where you roll a die because it adds randomness to the game. In any case, before house ruling this I would like to know if anyone knows the intent of the rules as they are now.