Problem is, the game is sometimes too complex for it. The cursor change that indicates this is sufficiently unobvious that I didn't figure it out until after I'd finished the game. And the final puzzle, while a brilliantly clever piece of game design, just absolutely doesn't fit into the interface. I knew what I wanted to do, but I stumbled through doing it by pure trial and error. Hotspots appear and disappear at random.
Navigation stops working.
You have to use an inventory item on a room feature, but a closeup view of that feature turns out to be the one view you can't use the item on. A wall panel stops working and then starts again. In fact, none of that sequence really made sense. I clicked everything on everything else, and hoped that the protagonist would carry out the Clever Plan that the designers had come up with. You can drop things whenever you feel like it, and if it makes sense to position them usefully, the game can cue you by telling you you've done it.