Should we model growth as continuous or discrete

library(targets)
library(ggplot2)
library(tidyverse)
library(tidybayes)

How do things grow (or: decay)

Let’s start with a simple simulation:

start_size <- 45
decay_rate <- .3
tibble(time = 0:20, 
       mass = start_size * exp(-decay_rate * time)) |> 
  ggplot(aes(x = time, y = mass)) + 
  geom_point()