Zero evidence that it's directed.
Known mechanisms for mutation
The known mechanisms for mutation are the evidence for direction.
Because random mutations destroy the specificity of the gene, you can't turn a bacteria into a human being by simply introducing random error.
You will destroy the organism long before you ever achieve this.
If you like questions,
Which mutatins are presumed to be directed, which not?
As above, mutations which destroy functional information are random/ undirected- this is what we expect mathematically, and what we observe in nature and experimentally. And is also referred to as micro-evolution.
The 'mutations' which produced e.g. entire new proteins crucial to macroevolutionary events like the Cambrian explosion- are the exact opposite phenomena, the introduction of vast new volumes of functional information. = macro-evolution, and cannot be explained by mere random errors.
In short:
micro/backward steps are random
macro/forward steps are not
why assume a god of lesser capacity, who,couldn't
set the universe up to do what he wants, without
having to meddle and tinker on the fly like itx an old
british sports car?
It's a very good analogy & the above applies perfectly.
Random deterioration of the car is what we expect and observe through entropy. Parts will wear out and rust gradually/ specified functionality is lost. (micro evolution)
But occasionally we see changes in the opposite direction, a brand new part will suddenly appear, providing a brand new function- a transmission with a whole extra gear perhaps. (macro-evolution)
You cannot extrapolate the first mechanism to explain the second, they are entirely opposite in direction.