As Beverly puts it " If Church is your vaccination against Satan, these meetings are your boosters ".

If the proportion of immune individuals exceeds this level due to a mass vaccination programme, the disease will die out.

If a vaccination programme causes the proportion of immune individuals in a population to exceed the critical threshold for a significant length of time, transmission of the infectious disease in that population will gradually come to a halt.

If a vaccination program successfully reduces the disease threat, it may reduce the perceived risk of disease enough so that an individual's optimal strategy is to refuse vaccination at coverage levels below those optimal for the community.

If we cannot stop warfare in our own economic system, how can we expect to abolish it internationally??

If the points aren't thrown all the way, the Turnout cannot be locked, and in turn, the signal cannot be cleared.

`` If we cannot tell evil, horror, and insanity from nonsense, what is the future of humor and comedy ''??

If a litigant chooses to enforce a Federal right in a State court, he cannot be heard to object if he is treated exactly as are plaintiffs who press like claims arising under State law with regard to the form in which the claim must be stated -- the particularity, for instance, with which a cause of action must be described.

If the patient can perceive figure kinesthetically when he cannot perceive it visually, then, it would seem, the sense of touch has immediate contact with the spatial aspects of things in independence of visual representations, at least in regard to two dimensions, and, as we shall see, even this much spatial awareness on the part of unaided touch is denied by the authors.

If the latter knows nothing about the absent sitter except his name ( given by the experimenter ), he cannot possibly give any clues, conscious or unconscious, far less ask leading questions.

If a union cannot perform this function, then collective bargaining is being palmed off by organizers as a gigantic fraud.

If we cannot make explicit choices, how do we know that our set exists?

If there is an overabundance of food hunted, the arctic fox will bury what the family cannot eat.

If the daughter is an only child or her sisters are deceased and have no living issue, she ( or her heir ) is vested with the title ; otherwise, since a peerage cannot be shared nor divided, the dignity goes into abeyance between the sisters or their heirs, and is held by no one.

If the assets used are not identical ( so a price divergence makes the trade temporarily lose money ), or the margin treatment is not identical, and the trader is accordingly required to post margin ( faces a margin call ), the trader may run out of capital ( if they run out of cash and cannot borrow more ) and go bankrupt even though the trades may be expected to ultimately make money.

If nature cannot err, then there are no paradoxes in it ; to Hobbes, the paradox is a form of the absurd, which is inconsistency: " Natural sense and imagination, are not subject to absurdity " and " For error is but a deception ...

If we cannot stay here alive, then we will stay here dead.

If a pair cannot hit downwards, they will use flat strokes in an attempt to gain the attack.

But this destruction, coupled with a protracted siege of Rain ( 9 – 16 July ), caused Prince Eugene to lament "... since the Donauwörth action I cannot admire their performances ", and later to conclude " If he has to go home without having achieved his objective, he will certainly be ruined.

* Indivisibility of certain goods: If a person wants to buy a certain amount of another's goods, but only has for payment one indivisible unit of another good which is worth more than what the person wants to obtain, a barter transaction cannot occur.

If the remaining array to be searched is reduced to zero, then the key cannot be found in the array and a special " Not found " indication is returned.

If players cannot move either die in a roll, given the position of their checkers then that turn is over and the turn passes to the opponent.

If the Crawford rule is in effect, then another option is the Holland rule, which stipulates that after the Crawford game, a player cannot double until after at least two rolls have been played by each side.

If we look at this situation from far above, so that we cannot see the supporters, we see the large balloon as a small object animated by erratic movement.

If a newer software version cannot save files that can be read by the older version, it is not backward compatible with the older version, although it may provide an irreversible upgrade capability for the old files.

If a Banach algebra has unit 1, then 1 cannot be a commutator ; i. e., for any x, y ∈ A.

If a bookmaker follows the rules of the Bayesian calculus in the construction of his odds, a Dutch book cannot be made.

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If we let them go, they won't stay away, they'll find men to ride with them and they'll be back.

If she, Pamela, were being held responsible for his crimes, then hers must be the final act of expiation.

If you don't leave this country within 3 days, your life will be taken the same as Powell's was.

If I hadn't got Nate stopped when I did, my duds'd all be shot plumb to hell!!

`` If you will pardon, I think it would be better if not.

If he showed signs of collecting his rifle and going back with his deputy to the ranch he would be shot down instantly.

If the circumstances are faced frankly it is not reasonable to expect this to be true.

If communications work, his decision would be instantly known in all command posts that would originate the actual go order.

If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.

If the Union conceded this to them, the same right must be conceded to each remaining state whenever it saw fit to secede: This would destroy the federal balance between it and the states, and in the end sacrifice to the sovereignty of the states all the liberty the citizens had gained by their Union.

If an automobile were approaching him, he would know what was required of him, even though he might not be able to act quickly enough.

If life and death did not both present themselves to us, there would be no inscrutability.

If there were only darkness, all would be clear.

If there were only the mess, all would be clear ; ;

If he is good, he may not be legal ; ;

If the existent form is to be retained new factors that reinforce it must be introduced into the situation.

If I now risk some comparisons with Sons And Lovers let it be clear that I am not comparing the two works or judging their merits ; ;

If many of the characters in contemporary novels appear to be the bloodless relations of characters in a case history it is because the novelist is often forgetful today that those things that we call character manifest themselves in surface behavior, that the ego is still the executive agency of personality, and that all we know of personality must be discerned through the ego.

If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.

If in any one calculation Ptolemy had had to invoke 83 epicycles all at once, while Copernicus never required more than one third this number, then ( in the sense obvious to Margenau ) Ptolemaic astronomy would be simpler than Copernican.

If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.

If `` Jack the Courtier '' is really to be taken as Swift, the following remark is obviously Steele's comment on Swift's change of parties and its effect on their friendship: `` I assure you, dear Jack, when I first found out such an Allay in you, as makes you of so malleable a Constitution, that you may be worked into any Form an Artificer pleases, I foresaw I should not enjoy your Favour much longer ''.