By accumulating tiny pressure over decades in zero gravity where they face no friction.
It is not coincidental that you had to go to this extreme of an example.
.
"Light has inertia."
I see you missed the part where I gave a factual accounting of how much inertia is dispensed.
"If you emit large amounts of energy with any form of light, you'll get a thrust."
At the entire output of the Sun, you do not produce enough thrust to lift an average adult male human being in the gravity of the Earth.
Go do the math.
By accumulating tiny pressure over decades in zero gravity where they face no friction.
It is not coincidental that you had to go to this extreme of an example.
.
"Light has inertia."
I see you missed the part where I gave a factual accounting of how much inertia is dispensed.
.
"If you emit large amounts of energy with any form of light, you'll get a thrust."
At the entire output of the Sun, you do not produce enough thrust to lift an average adult male human being in the gravity of the Earth.
Go do the math.