We couch our discussions about creation and evolution in terms of deep or very short time. Both groups say what they believe can account for all that we see today in how they define how things work and why. Suppose you are an old-universe Theist or Atheist evolutionist. In that case, deep time can answer all the complex issues surrounding life, while a young universe Creationist says God did it, so it means all the complex issues are done due to his design.
For questions unanswered, it is either God of the gaps or evolution of the gaps, which can be a blanket comment on the unknown. Neither statement helps move the needle; it only irritates the side directed at.
I looked it up and saw that the human body has about 30 trillion cells, about 200 different types. This is a huge number of cells, and if you are a common ancestor evolutionist, you need to account for each one due to mutations.
For a thought exercise, I'd like to know how many mutations it would take to reach the 30 trillion cells in the human body today. I have done the math already, but I think it would be better if you did it yourself. It would be more meaningful. Every mutation is considered good, and all move towards life; a best-case scenario for getting the job done is what it looks like practically per year.
This exercise assumes abiogenesis occurred, evolution from a common ancestor is true, and every mutation correctly leads to human life, so there is no justification for age, abiogenesis, or evolutionary mutations. They are all accepted as true, and we only want to know how many per year from the starting point of life per year and how many mutations it takes to reach 30 trillion. I've asked these other places, and people have either ignored it or come up with issues like cancer, longevity, and so on, but today they never actually touched the question.
This is simply a find X, the number of mutations per year to reach 30 trillion. If we know 30 trillion is the goal, we need to know the start date to determine how many years are needed to find X.