[M T]

I haven't played with their numbers or given the study a critical read, but it sounds promising.  I like the idea of highlighting what places are getting the most traffic and associating that with transmission.  I'd think that must involve some assumptions about transmissibility.
I'm curious how they distinguish (say) indoor vs outdoor dining (or barber shops, etc.).  I see some biases showing up in the text.

I believe the study will have little or no information regarding the movement of younger children, the homeless, or others without cell phones.  I believe the study was at a time when very few schools were in session.  (I tried to think of any proxy gathering that gets people from many of a community's households into close proximity of each other.  Maybe churches in communities where most attend church regularly or sports events in college towns.)

(Re transmissibility:  if the same number of people are in a store with the same square footage with a 10' ceiling (enclosed) as a 30' ceiling with large open doors (Lowe's or Home Depot), is transmission similar?)

Hopefully, this will result in somewhere like California or SCC adjusting what is open or not at the different epidemic levels.  Even if that doesn't happen (WHY did California open indoor dining??), it gives the public a chance to understand what risks are associated with their activities, and adjust according to their risk tolerance.

[M T]

I haven't played with their numbers or given the study a critical read, but it sounds promising.  I like the idea of highlighting what places are getting the most traffic and associating that with transmission.  I'd think that must involve some assumptions about transmissibility.
I'm curious how they distinguish (say) indoor vs outdoor dining (or barber shops, etc.).  I see some biases showing up in the text.

I believe the study will have little or no information regarding the movement of younger children, the homeless, or others without cell phones.  I believe the study was at a time when very few schools were in session.  (I tried to think of any proxy gathering that gets people from many of a community's households into close proximity of each other.  Maybe churches in communities where most attend church regularly or sports events in college towns.)

(Re transmissibility:  if the same number of people are in a store with the same square footage with a 10' ceiling (enclosed) as a 30' ceiling with large open doors (Lowe's or Home Depot), is transmission similar?)

Hopefully, this will result in somewhere like California or SCC adjusting what is open or not at the different epidemic levels.  Even if that doesn't happen (WHY did California open indoor dining??), it gives the public a chance to understand what risks are associated with their activities, and adjust according to their risk tolerance.