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One example is how to protect ourselves against covid-19. Although
droplet protection was initially informed by WHO against covid-19, the
airborne protection should have been proposed based on the past lessons
from SARS and MERS. Another example is Pouillet’s law or Ohm’s law.
Based on Pouillet’s law, the electrical resistance is proportional to
electrical resistivity, the length of the specimen. According to the
conductance quantum, the resistance of an atomic conductor does not
scale proportional to length which contradicts with Pouillet’s law.
Although WHO (world health organization) should be a trusted
organization, WHO has informed us optimistic protections against
covid-19. WHO gave advices on wearing masks to protect against covid-19
in January 20202. WHO stated that the virus can be
spread via infectious droplets or through touching contaminated surfaces
in April 20203. WHO gave the contradictory message in
June 2020 “Non-medical, fabric masks are being used by many people in
public areas, but there has been limited evidence on their effectiveness
and WHO does not recommend their widespread use among the public for
control of COVID-19”4. In July 2020, WHO finally
announced that airborne precautions are needed against
covid-195. WHO should have known the following fact
long time ago that “droplet precautions should be added to standard
precautions when providing care to all patients with symptoms of acute
respiratory infection. Contact precautions and eye protection should be
added when caring for suspected or confirmed cases of MERS. Airborne
precautions should be applied when performing aerosol‐generating
procedures”6,7,8. Based on the past lessons of SARS
and MERS, pessimistic protections instead of optimistic protections
should be announced by the trusted scientific communities including WHO
against the infection diseases.
Based on Pouillet’s law, the electrical resistance of a uniform specimen
of the material is proportional to electrical resistivity, the length of
the specimen, and the inverse of the cross-sectional area of the
specimen respectively. Au (gold) can be stretched into conducting chains
of individual atoms9. After a new discovery of the
conductance quantum, we understand that the resistance of an atomic
conductor does not scale proportional to length9. This
means that scientific information is not robust but tentative. Science
should be based on replacing expired facts and evidences with new ones.