The “aftershops”

Monday, January 16

9:30am – 12:00pm Earth’s First Crust (ELSI 2 Lounge)

The First Crust Aftershop is designed to allow people to discuss this topic in more detail than is possible during the symposium.  “Earth’s First Crust” is a hot topic that requires input from many disciplines and is widely debated since we seem to have lost it some time in the Hadean.

We plan for a lively discussion based on short talks.  The speaker schedule is not set, so its safest to attend the whole event. The current list of scheduled presenters is:

Solidification of the magma ocean
– John Hernlund, Keiko Hamano, Hidenori Genda

What can the moon’s crust tell us about the Earth’s first crust?
– Shige Maruyama 

What can the Mars crust tell us about the Earth’s first crust?
– Tomo Tsui 

The composition of chondrites from Sm/Nd isotopes
– Ryota Fukai

Clues of first crust from the oldest Archean rocks
– Yuichiro Ueno 

Note: titles and presenters are subject to change.

1:00pm – 6pm Future of Prebiotic Chemistry (ELSI 2 406/407)

The aftershop is intended to generate new collaborative research ideas within the field of prebiotic chemistry. The schedule of the aftershop is as follows:

  • 1:00 – 1:10pm Opening remarks
  • 1:10 – 1:30pm Introductions
  • 1:30 – 2pm 4 x 5-10 min short presentations by selected presenters with questions
  • 2:00 – 2:30pm Speed dating round table
  • 2:30 – 3:00pm Idea-post-it brain storming session
  • 3:00 – 3:20pm coffee break
  • 3:20 – 3:40pm Divide up into four break-out groups
  • 3:40 – 4:40pm Breakout group discussion
  • 4:45 – 5:45pm Breakout group presentations and discussion

Tuesday, January 17

9:00am – 12:30pm  Chemistry to Computation: Why Is it So Hard and Can Thermodynamics Help? (ELSI Hall)

The discussions will concentrate on the following topics:

  • What general ingredients do we need for the emergence of complex organisations?
    • Certiain network topologies seem favorable (e.g. scale free)
    • Certain thermodynamic regimes (criticality)
    • Large combinatoric spaces (but not too large)
  • What has thermodynamics already given us
    • The Second Law (life a manifestaton of it)
    • Maximum Entropy Production Principle, but it doesn’t work. However Jaynes approach to statistical mechanics seems helpful. What do we think about high density of trajectories translating to most stable attractors?
    • Onsager’s relations (sometimes seem to remain correct well beyond the linear regime)
    • Stochastic thermodynamics (good for small systems, how far can we use it with larger systems?)
  • Under what conditions are complexity, computation, learning the most stable attractors?

1:30pm – 5:00pm Ancestral States and Their Properties (ELSI 2 406/407)

In this aftershop, we peer into the ways that we gain insight into ancient historical biology and its relationships to the Earth. Over half a day, we will:

  • Discuss in groups how ancestral biological states are inferred.
  • Try to identify how the limits of these inferences can be identified by hypothesis testing.
  • Attempt to evaluate the significance of inferred results in light.