My letter was in reply to a Charles Lane column entitled: "Throwing stones against socialism and hitting other targets", which can be read at https://www.washingtonpost.com/opinions/socialism-hasnt-exactly-helped-out-new-yorks-housing-projects/2018/07/09/fdbafcb6-838f-11e8-9e80-403a221946a7_story.html?utm_term=.41dd266db5cb .

My reply  is immediately below another response at this link.

https://www.washingtonpost.com/opinions/throwing-stones-against-socialism-and-hitting-other-targets/2018/07/13/5c6ba936-853e-11e8-9e06-4db52ac42e05_story.html?utm_term=.924c9bb6487b 

Chapter 7 in the book "Paratransit: Shaping the Flexible Transport Future", which is Volume 8 of Emerald Group Publishing Ltd's Transport and Sustainability series, grew out of a paper I wrote for  the 2014 Transportation Research Board International Conference on Demand Response Transportation.  You can buy this chapter or the entire book at https://www.emeraldinsight.com/doi/full/10.1108/S2044-994120160000008007