Sapientia

There are three types of if-clauses. (Some people say there are actually four, I'll come to that later. The fourth type is referred to not as type number four, but rather as "Type Zero") If-clauses Type One If Mortimer Adams writes a book, he will earn money with it. With Mortimer actually being a writer, maybe professional, maybe even renown, there is a real possibility of him earning money with it. This constitutes an if-clause type one. Of course you can put it vice versa: Mortimer Adams will earn money with a book if he writes one.  One more example: If Peter wins that match he will be happy. Peter will be happy if he wins that match. Of course negation is also possible: If Peter doesn't win that match he will be sad. Let's have a look at the different possibilities, + (plus) denoting the positive claim and - (minus) denoting the negation: If they move to London they will meet new neigbours. (+/+) They will meet new neigbours if they move to Londo