A storm is brewing round the scientists in line to win the Nobel prize for predicting the elusive particle.

Therefore, to the big bang model different medium in the light path represents a particle in space and time, this is the life among physicists call "world line" things.

Vessel can not be regarded as particle while vessel is berthing, so distance of vessel and shoreline is not distance of point and line, it should be calculated as space between polygon and line.