intelligent design? yes, having all this mind boggling complexity and much more than we can percieve be random particles and energy seems silly.
anyhow im sure some of our origins are earth based for example if an early earthbound hominid like the rhesus monkey developed into the neanderthal and then that species was tinkered with off world DNA or a host of other scenarios with ET's then our origins would be half earth based half off world based, but like i mentioned above the "missing link" is missing for a reason we leapt from one stage of evolution and seemingly leaped 2 to 5 steps ahead and there is no fossil record of this progression, just BOOM ..homo sapien
heres my blog with specifics
http://superstrangeland.blogspot.com...ipulation.html