15 FIELD GUIDES · 2 WORKED EXAMPLES
What would count as life?
Separate self-organization, replication, growth and evolution when evaluating ideas about the origins of cellular systems.
Cellular origins & organization
Start with the question closest to your experiment. Each guide separates the mechanism, an illustrative example, and the evidence needed for the next decision.
What does it mean to call a system living?
Examine working definitions of life as tools for asking questions, with attention to system boundaries, evolution, and cases that resist a simple label.
Read the guide ↗FIELD GUIDEWhy do compartments matter in origins research?
Explore how a boundary changes which components stay together and interact, without confusing a compartment with a complete or independently living cell.
Read the guide ↗FIELD GUIDEWhy is self-assembly not the same as life?
Distinguish spontaneous organization from sustained living behavior, and learn why an orderly structure alone cannot establish heredity or evolution.
Read the guide ↗FIELD GUIDEWhat does autocatalysis actually mean?
Understand a reaction helping generate more of its own catalyst, and why positive feedback alone does not prove unlimited growth, heredity, or life.
Read the guide ↗FIELD GUIDEWhat can an energy gradient contribute?
Explore gradients as differences that may support processes, while distinguishing available energy, useful coupling, and evidence about early Earth.
Read the guide ↗FIELD GUIDEDoes chemical oscillation imply a living rhythm?
Learn why repeating chemical changes can occur without life, and how a time series differs from evidence of reproduction, control, or biological purpose.
Read the guide ↗FIELD GUIDEHow is metabolism different from a battery running down?
Compare energy release with a network that supports ongoing organization, and learn why a changing energy signal alone cannot establish metabolism.
Read the guide ↗FIELD GUIDEWhen does copying become replication?
Distinguish a one-time copy from a process that supports further copies, with attention to external support, fidelity, and what is actually inherited.
Read the guide ↗FIELD GUIDEWhy are growth and division separate questions?
Explore why becoming larger differs from producing descendants, and why a split alone does not establish inheritance or a complete reproductive cycle.
Read the guide ↗FIELD GUIDEWhy must variation be heritable to support evolution?
Distinguish temporary differences from differences passed through a lineage, and connect inheritance with differential persistence without assuming progress.
Read the guide ↗FIELD GUIDEWhy are contamination controls part of the argument?
Understand controls as evidence about alternative origins of a signal, without treating a positive detection as proof that the signal came from the sample.
Read the guide ↗FIELD GUIDEWhy does energy flux matter more than a static energy label?
Explore the difference between a stored amount and a rate of transfer, with a simple energy balance that keeps inputs, outputs, and accumulation distinct.
Read the guide ↗FIELD GUIDEAre synthetic cells and minimal cells the same?
Distinguish how a cell was made from how reduced its components are, and understand why neither label means life was created entirely from raw materials.
Read the guide ↗FIELD GUIDEWhat can a microscope image establish?
Learn to separate visible morphology from biological interpretation, with scale, time, chemistry, and alternative explanations kept beside the image.
Read the guide ↗FIELD GUIDEWhat makes an origin-of-life hypothesis testable?
Explore how hypotheses gain scientific traction through discriminating predictions, explicit assumptions, and observations that could count against them.
Read the guide ↗PUT THE IDEAS TO WORK