>>14708801because for a toddler whose future is ubiquituous from becoming a welder, a crackhead or a molecular biologist you really don't need to know the finer the detail
you don't need to know which spot on the ribose ring binds to nitrogen base, and which spot binds phosphate for the upcoming nucleotide and which for the former nucleotide
you don't need to know about A, B, Z and other helixes of DNA nor the sin and anti conformation of nitrogen bases in those helixes
you don't need to know how many aminoacids are in H1, H2A, H2B, H3 and H4 histon globular polypeptides that bind DNA into pearls on strand, you don't need to know about stacking of cromatin fibers
you just need to know the basics, with your average available equipent you may see the metaphase chromosome but that's not here nor there