Jonathan Wells holds two doctoral degrees, one in molecular and cell biology from UC Berkeley and another in religious studies from Yale University. As a senior fellow at the Discovery Institute, Wells became one of the leading advocates for intelligent design. His professional background includes work as a postdoctoral research biologist at Berkeley, supervision of a medical laboratory in Fairfield, California, and teaching biology at California State University. Wells’s most influential work is Icons of Evolution: Why Much of What We Teach About Evolution is Wrong (2000), which challenges commonly used examples in biology textbooks that Wells argues misrepresent or exaggerate evidence for Darwinian evolution. The book received significant pushback from the scientific community on both methodological and ethical grounds, arguing (for example) that it misrepresented the textbooks in question and failed to engage with the most robust evidence for evolution (Gishlick, Alan D. “Why Much of What Jonathan Wells Writes About Evolution Is Wrong.” National Center for Science Education, 2008).

In The Case for a Creator, Wells appears as the first expert interviewed, providing a critical examination of the evidence for Darwinian evolution. Wells’s contributions serve a foundational role in Strobel’s overall argument structure. By positioning Wells’s critique of evolutionary evidence early in the book, Strobel establishes doubt about the conventional materialist explanations before introducing subsequent experts who offer positive arguments for intelligent design.

Stephen Meyer received his doctorate in the philosophy of science from the University of Cambridge, following earlier studies at Whitworth College, where he graduated with a double major in physics and earth science. Prior to his academic career, Meyer worked as a geophysicist. Meyer became a founder of the Center for Science and Culture at the Discovery Institute, where he has served as director and senior fellow since 2002. Strobel’s inclusion of Meyer in his book foreshadowed Meyer’s greater rise to prominence as a leader in the fields of intelligent design and the philosophy of religion. In 2004, Meyer generated substantial controversy when a Smithsonian Institution-affiliated biology journal published his peer-reviewed article advancing intelligent design theory. His published books include New York Times bestsellers like Signature in the Cell (2009), Darwin’s Doubt (2013), and The Return of the God Hypothesis (2021). His work focuses on challenging naturalistic explanations for biological origins, arguing instead that features like DNA’s information-carrying capacity point toward an intelligent designer rather than unguided evolutionary processes. While it has generally been poorly received in the academic community, Meyer’s ideas have received some support from mainstream figures, such as philosopher Thomas Nagel, who named Signature in the Cell as one of 2009’s “books of the year” (“Books of the Year 2009.” Times Online, 2009).

In The Case for a Creator, Meyer appears in two separate interviews, first in Chapter 4 and again in Chapter 9. In the first interview, Meyer addresses the relationship between science and religion, arguing against the notion that these represent non-overlapping domains. In his second interview, Meyer focuses on origin-of-life questions, presenting the case that naturalistic processes have failed to explain how non-living chemicals could self-assemble into the first living cell and that the information content in DNA presents insurmountable hurdles that cannot be resolved through further research. Meyer’s contributions to The Case for a Creator establish the theoretical framework for intelligent design by arguing that contemporary science, rather than supporting materialist explanations, instead provides evidence pointing toward a supernatural creator. He is thus key to the book’s exploration of both The Complexity of Biological Systems Challenging Materialism and The Scientific Method as a Means of Assessing Evidence for Supernatural Reality.

William Lane Craig is a philosopher and Christian apologist who has taught at Trinity Evangelical Divinity School, the University of Louvain, Talbot School of Theology, and Houston Christian University. Craig holds two master’s degrees from Trinity Evangelical Divinity School, a doctorate in philosophy from the University of Birmingham, and a second doctorate in theology from the University of Munich. His doctoral work at Birmingham focused on the cosmological argument for God’s existence, leading to his first book, The Kalam Cosmological Argument (1979). His published works include major titles such as Reasonable Faith: Christian Truth and Apologetics (1984) and God, Time and Eternity (2001). Craig has debated prominent atheist intellectuals, including neurologist Sam Harris, journalist Christopher Hitchens, theoretical physicist Lawrence Krauss, and philosopher Antony Flew, who would later convert to deism based on philosophical arguments similar to those propounded by Craig. Though Craig is not without his critics, his intellect and rhetorical skills have generally garnered respect even from those who disagree with his conclusions.

Craig is most recognized for his revival of the kalam cosmological argument for the existence of God. Craig’s contribution to The Case for a Creator establishes the cosmological foundation for Strobel’s broader argument by asserting that modern scientific discoveries, particularly the evidence for the Big Bang, have strengthened rather than undermined the classical theistic argument for a transcendent creator. Although Craig’s approach is philosophical rather than scientific, he thus lays the groundwork for the book’s case regarding The Fine-Tuning of the Universe as Evidence for Design.

Robin Collins is a philosopher who serves at Messiah University. He received his doctorate from Notre Dame in 1993, exploring epistemological issues touching on scientific realism under the advisement of the notable Christian philosopher Alvin Plantinga. Collins is most recognized for his development and defense of the fine-tuning argument for the existence of God, which asserts that the laws of nature, the constants of physics, and the initial conditions of the universe are set with extraordinary precision to permit the existence of complex life. Collins uses the analogy of a radio tuner to illustrate this concept, noting that just as a radio must be tuned to a precise frequency within a narrow range to receive a station, the universe appears to be configured in precisely the ways required for intelligent human life to exist.

Like another Strobel interviewee, Guillermo Gonzalez, Collins moves beyond the traditional fine-tuning argument to encompass the “fine-tuning for discoverability” argument, which contends that the universe is optimized to allow intelligent beings to make scientific discoveries about the underlying structure of reality. In 2016, the John Templeton Foundation awarded Collins a grant to explore this hypothesis. Collins’s contribution to The Case for a Creator provides the physical and cosmological foundation for intelligent design by arguing that the universe’s extraordinary fine-tuning cannot be adequately explained by chance or necessity but rather points toward a transcendent Designer.

Strobel interviewed Gonzalez and Richards together for Chapter 7, as both focus on issues of astronomical fine-tuning. Guillermo Gonzalez is a Cuban-born American astronomer who received his doctorate in astronomy from the University of Washington. Gonzalez has authored or co-authored nearly 70 peer-reviewed scientific papers, as well as a college-level astronomy textbook, and his work has inspired pieces in publications such as Science and Nature (“Biography of Dr. Guillermo Gonzales.” The Discovery Institute). Following postdoctoral work, Gonzalez taught astronomy and physics courses at the University of Washington, Iowa State University, Grove City College, and Ball State University. Iowa State’s 2007 decision not to grant Gonzalez tenure was a source of significant controversy, as the Discovery Institute alleged that it represented religious discrimination; however, the university and its faculty contended that the choice reflected other factors, such as Gonzalez’s failure to secure research funding (Keim, Brandon. “Astronomers’ Tenure Battle Part of Intelligent Design’s ‘Wedge’ Strategy, Says Scientist.” Wired, 2007). 

Jay Wesley Richards is a philosopher who serves as a research fellow at the Heritage Foundation and the Discovery Institute. He earned his doctorate in philosophy and theology from Princeton Theological Seminary and is the author or editor of more than a dozen books, as well as the creator and executive producer of several documentaries. In 2004, Gonzalez and Richards co-authored The Privileged Planet, presenting astronomical evidence for intelligent design. Supported by a research grant from the Templeton Foundation, the book earned praise from scientists including David Hughes, a vice president of the Royal Astronomical Society, Harvard astrophysicist Owen Gingerich, and Cambridge paleobiologist Simon Conway Morris. It also attracted criticism from figures such as University of Hawaii physicist Victor J. Stenger, who argued that, religious implications aside, the premise of Earth’s uniqueness is itself a scientifically controversial stance (Stenger, Victor J. “Reality Check: The Privileged Planet.” Skeptical Briefs, 2005). 

The joint contribution of Gonzalez and Richards to The Case for a Creator extends the design argument beyond mere habitability by asserting that Earth occupies a privileged position not only for sustaining life but also for making scientific discoveries about the cosmos, thereby suggesting intentional design that facilitates both human existence and human exploration of the universe’s underlying structure.

Michael Behe is a biochemist who has worked for the National Institutes of Health and who now serves as a professor at Lehigh University. He completed his graduate studies in biochemistry at the University of Pennsylvania and was awarded a doctorate for his dissertation research on sickle-cell anemia. Behe once accepted the scientific theory of evolution, but he came to believe that there was scientific evidence that at a biochemical level, some biological systems were irreducibly complex, meaning that he thought they could not have evolved and thus must have been created by an intelligent designer. In 1996, Behe published his ideas on irreducible complexity in his book Darwin’s Black Box. His work has focused on molecular machines such as the blood-clotting cascade and cellular transport systems, which he argues could not have arisen through gradual evolutionary modifications.

Behe’s contribution to The Case for a Creator provides what Strobel frames as a biochemical challenge to evolutionary theory, arguing that the complexity of molecular machinery at the cellular level points toward intentional design rather than gradual evolutionary development. Behe’s claims, however, have been held in question by the majority of the scientific community, and his own biology department at Lehigh University published a statement repudiating Behe’s views.