- changed the order of sections: moved data down and kinds of sizes up
- added platform affordances section
- added kinds of sizes section
- fixed some typos
- Edited the engineer's corner section to flow with the current text and added a better explanation to double counting example.

Included in this commit is the generated html file.
- transposed the rows and columns in the table comparing pros and cons of the emperical and descriptive methods
- updated the link to engrs corner
- corrected a typo
- add css rules to center the headers in the methods table. not fully done as the content is not vertically aligned.
Generated html from latest run, with changed css.