What specific challenge does science face when attempting to capture subjective, first-person experience (qualia)?

Answer

Science cannot convey the actual feeling of an experience to someone who has never had it.

Science deals in measurable, third-person data, meaning that while it can describe the physical processes of an experience like redness, it cannot convey the actual internal feeling of that experience.

What specific challenge does science face when attempting to capture subjective, first-person experience (qualia)?
scienceknowledgelimitationcertainty