No no, the pyramids were build by us
A crippling job though.... But if we could do that with bare hand - we can do alot more, especially with nowadays scientific industry.
Once quantum computing becomes practical (next decade) artifical intelligence of human quality (or beyond) will be used in any small toy. This will roboticise our society by creating a complete mechanisiced subsociety where intelligent robots design, build & maintain themselves (even gain all materials and energy needed for this...). Once this will be established the growthrate of available units will rise exponentially. There will be so many of them that there will be no more work left for us but instead a never-ending stream of all thinkable resources for free. Have fun