Ah, Grasshopper! I see you are new to mysteries of Schiphol Gate H! You look at monitor, hope to see gate number? Hope to see when boarding? Ha! I laugh at you and your feeble kung fu.
Next time, you learn from Schiphol Gate H kung fu masters. Grasshopper, where you think all those people already on plane come from? Once they too were young and foolish like you! Now they have studied and become wise! They go to Gate H no matter what crazy monkey monitors say. If they find plane there, they get on. If no plane, they sit on floor blocking corridor, meditating on their Schiphol kung fu. You learn, you do same! Maybe your flight leave with you on board!