I TAed intro bio classes for several years. Here’s part of an e-mail I sent to a creationist student of mine last spring. The student had asked me if I really believed that rocks are billions of years old, instead of the thousands of years old that the Bible (or his interpretation of it, anyway) would have us believe.
I forwarded my student’s question on to some of my friends, one of whom wrote most of the text below as a suggested reply. When I sent it off to my student, I asked my friend if he’d mind my sharing it with others. He was happy to have it publicized far and wide, he told me, so I’m posting it here. Maybe you could adapt it as a reply to the Dr. Lisle.
Dear [student’s name deleted],
You asked why biologists think that the earth
> is billions of years
> old. Geologists, and scientists in general
> believe that the earth is
> so old because they believe that the universe
> is governed by
> consistent, testable rules. Specifically,
> certain radioactive
> elements decay into other isotopes or elements
> in a measurable and
> statistically predictable way (although there
> is no way to know when
> a specific atom will decay!) Since not all
> isotopes and elements
> decay at the same rate, we can use the ratio of
> elements found in
> rocks to date the age of the earth. There are
> many other scientific
> observations that place the age of the earth at
> many billions of
> years. You can look them up on the internet.
> Science does not rule
> out the presence of a creator, but it does not
> require His actions to
> explain natural phenomena.
>
> The bible doesn’t state that the earth is
> 1000’s of years old - that
> is one interpretation that treats the events in
> Genesis as a literal
> 7 day week, with some 4000 years of various
> genealogical lists and
> historical events following. But is the
> description in Genesis meant
> to be taken literally? Remember that 2nd Peter,
> chapter 3, verse 8
> says that 1000 years is like a day to the Lord.
>
> Some would have you believe that God made the
> rocks look like they
> were billions of years old, when they were in
> fact thousands. I do
> not presume to know the mind of God, but why is
> it easy to believe
> that God would try to trick man, but not to
> believe that he might
> revel in our discovery?
>
> You asked if biologists do not believe in God.
> Many biologists
> believe in God, and believe that the bible
> contains an accurate
> spiritual description of the world, if not a
> literal one. The bible
> is important for what it teaches us about how
> to appreciate God’s
> gifts, and how to treat each other, but not for
> its use as a geology
> lesson.
>
> Believing in something which can neither be
> proved nor disproved,
> such as the existence of God, is faith. Faith
> can be a great source
> of personal strength, and inspire one to great
> works. Believing in
> something which can be readily disproved is
> foolishness, and an
> insult to the gift of intellect bestowed on you
> by your creator.
Also, you might be interested in mentioning this website: www.konkyo.org | The Age of the Earth in Light of the Bible browse
in your reply. The site is run by a minister working in Tsukuba, a city whose main industry is research, if I’ve got that right.