Rafts and wheels are wood, which is unlikely to survive well for 400,000 years.
That’s true, however empirical evidence strongly suggests humans did not have rafts or boats 400,00 years ago:
Archeological discoveries reveal an steady evolution of boats, beginning 10,000 years ago (assuming that date is correct) with simple canoes and rafts that were found here and there, after which boats increase in complexity, size, diversity and prevalence. For example, the first sailing boats appeared 6000 years ago; the first long boats 2500 years ago.
The evolutionary history of boats is entirely in line with the Genesis narrative - human beings did not evolve but were created somewhere between 5000-10,000 years ago as intelligent beings, after which they soon began inventing technology like boats, the sophistication of which subsequently evolved over time.
On the other hand, the Darwinist narrative presents an absurdity - at least 400,000 years ago, humans invented simple rafts and canoes, which remained unchanged until about 10,000 years ago, when - suddenly - humans started building all manner of much more sophisticated boats, the evolution of which continues to this day.
I know which scenario makes more sense.
Furthermore, the same timeline and pattern of evolution seen in the history of boats is also evident in the history of other inventions and innovations, such as the wheel, writing and metallurgy. You don’t have to be Einstein to see what’s going on here and to conclude that Darwinian folklore regarding the history of humans doesn’t add up.