We are all know, the name bootstrap means a loop kind of structure present in boot. Meanwhile, this name also come back when I'm constructing the phylogenetic trees using PHYLIP software. Why these values are called bootstrap?
I imagine that the name for the statistical procedure comes from the English expression "pull yourself up by your bootstraps". Which literally means lifting yourself up by pulling on the shoes you are wearing. The expression invokes the idea of something impossible, but also accomplishing something without help by hard work and dedication. ... The statistical bootstrap procedure invokes the same feeling, since it appears to create a large distribution of values from a smaller set of observed values. This is useful for calculating confidence intervals and in other applications. ... There are related approaches, like jackknife and Monte Carlo. The following discussion may be helpful: https://stats.stackexchange.com/questions/104040/resampling-simulation-methods-monte-carlo-bootstrapping-jackknifing-cross