Hi grammar experts,<br/><br/>I have a question about a usage of 'will' and 'would'. I realize that they are used for showing probability, like in :<br/><br/>"<b>That will be the 5.15 train</b>. (= That <b>must</b> be the the 5.15 train) " <br/><br/>or <br/><br/>" <b>That would be Fred. He calls everyday at 7 o'clock sharp.</b>" (That <b>is probably</b> Fred.)<br/><br/>Then, can I change this sentence into one with will<br/><br/><b>This book must be out of print at this point.</b> --&gt; This book <b>will</b> be out of print at this point.<br/><br/><b>This book is probably out of print at this point</b> --&gt; This book <b>would</b> be out of print at this point.<br/><br/>Thanks so much guys!!!!