The lava lamps are not true random though. For something to be truly random, it must be non-deterministic (no seed at all). The only way for a computer to accomplish this is to read from a source of true randomness in nature. The lava lamps are random enough, but not truly random.
At the moment, the only source thought of being non-deterministic is quantum mechanics.
So if you make a computer generate random numbers out of the randomness of quantum mechanics, you would have truly random numbers.
The lava lamps are not true random though. For something to be truly random, it must be non-deterministic (no seed at all). The only way for a computer to accomplish this is to read from a source of true randomness in nature. The lava lamps are random enough, but not truly random.
At the moment, the only source thought of being non-deterministic is quantum mechanics.
So if you make a computer generate random numbers out of the randomness of quantum mechanics, you would have truly random numbers.