In landing page optimization context the thought sequence concept is referring to the fact that a persuasive progressive design may influence the way visitors think about a product and the eventuality of buying it. The landing page design and writing may influence or stick to the thought sequence.
When using thought sequence the webpage designer want to lead the visitors to the desired action by optimizing a logical sequence of thoughts.
In the example below, the thought sequence is inspired by AIDA model. Note that the price is only evoked at the bottom of the page when visitors are convinced by the value proposition.